Disclaimer: the characters aren't mine

No real spoilers. Dr Weir and Dr Beckett are still there because they are good characters.

Summary: Mike Roads is a new marine Lt that has joined Atlantis…..will eventually be a Stargate: Atlantis/NCIS crossover but how do NCIS become involved?

Well here goes my first attempt at a multi-chapter fanfic

For the greater good

Chapter 1

It had been about four months since Mike had been approached by the trust and been given his new mission. At this point he had only been in Atlantis for almost two months and hadn't heard about what he was going to be doing here yet, he'd been getting nervous that maybe the trust had decided to choose someone else for the assignment that he'd been given. He'd also, been getting more nervous since he'd been in Atlantis because of all the stories that he had heard before coming here. He had been selected to accompany the most experienced team in Atlantis for a simple recon of a planet that had been found in the Ancient database. While heading towards the gate room he was thinking about how he came to be here in the first place, and why he was getting the feeling that he was doing the wrong thing. He had gotten used to the way Atlantis looked it was truly amazing to say the least. When he first heard that he'd be coming here he didn't expect all of the technology that was here, he was expecting ruins of a lost city.

x-X-x

Flashback- Four months ago back in Washington D.C

Mike had noticed that a black unmarked van had been following him for the past mile of his early morning run. The van seemed to be observing him at the moment. He decided that he should change his path to see if the van is actually following him or if, he's just being paranoid. He takes the footpath heading towards his local forest, deciding that maybe he could loose them in the cover of the trees. On second thoughts he thought that maybe he could see the occupants of the vehicle by hiding between the trees near the road that the van was on. As he searches for a vantage point, he doesn't notice the black-clad figure coming towards him. Mike stops suddenly as he realises his mistake. He had completely forgotten his marine training to make sure the way ahead was clear before proceeding. 'Oh well can't do anything about it now' he thinks.

"Move slowly and quietly to the van" the figure whispered in a foreboding way

"Why? What is this about?" Mike replied trying to remember any part of his marine training that could get him out of this situation, without getting himself killed in the process.

"We have a new job for you now get to the van; do not make me ask again"

"What job? Who are you people?" says mike becoming more uncomfortable with the situation that he was in, he was sure that if he could see the guys eyes then there would be a menacing look in them. The figure started to push mike loosing patience with him. Mike complied as he thought that is was either get shoved into a van or be killed for a reason unknown.

Inside the van there were more figures dressed in all black, Mike also noticed that there was others that had been rounded up just like he had 'maybe they were marines too' he thought quietly to himself. None of them looked liked they knew why they were there which was a small comfort in an odd way. At least he wasn't the only one. The atmosphere was somewhat hushed and slightly claustrophobic though, that could be due to the amount of the people cramped up in to the back of the van. He thought he would test the waters and talk anyway looking towards their 'guards'.

"What are we doing here? What do you want with us?" he asked as stoically as possible. He received only silence even the others that had also been rounded up stayed silent.

"That is none of your concern for the moment, all will be explained. Now be quiet!" Mike couldn't help but notice the tone in that last part. It gave the feeling that if he didn't stay silent then their 'guards' would do it for him permanently.

End flashback

x-X-x

Present day back in Atlantis

They had contacted him earlier in the day to give him the finer points of his mission, and to begin phase one of the assignment. Mike and the marines that he'd been sent with had been allowed to settle in. Get to know each other and how things worked in Atlantis. He knew that there was a risk of them getting caught however, the trust had told him if was for the greater good of the planet. He was getting the feeling that is was only for the greater good of the trust but if he wanted to live then, all he could do was to go along with it until he saw a way out. He and the others in his group had pretty much been keeping to themselves. A certain Lt Colonel had decided that each one of the new batch of marines would be assigned to an experienced team, to get the feel of gate travel and exploring new planets.

x-X-x

"So, Lt Roads, I hear that you came over with the last batch of marines. How are you finding Atlantis so far?" Sheppard asked lazily while walking through the sea blue shimmer that was the event horizon, the rest of his team following after him. Mike could barely believe that this guy was the Sheppard that everyone respected and heard heroic stories about. The guy looked naturally lazy. Maybe he was mistaken but he couldn't see what all the fuss was about.

"It's….. Interesting, sir" mike replied after he had stepped through the gate and on to the alien planet that, didn't look too alien. 'That's odd he thought' while taking in the surroundings, the sights, the sounds and the smells were all very similar to that of a forest on earth except for the big stone looking gate in the middle.

"Well that's the Pegasus galaxy for you" Sheppard smirk in a 'you could say that' way, his team had over heard the small conversation and had shared the smirk with their team leader as he had spoken the words. Mike was interested in what the smirk reflected but decided not to ask, maybe he would find out in time.

Mike fell in with Sheppard's team as they started walking away from the gate in extended line formation. The gate was situated in the middle of a field, the formation allowed for all angles to be covered. The planet itself was a typical Pegasus galaxy planet. A lot like earth, lots of trees, not much civilisation in immediate vicinity of the gate. This was mostly down to the Wraith as; they came to cull worlds via the gate. Sheppard had decided that a simple recon mission to explore planets would be good to brake in the new recruits. He was hoping that nothing was going to happen because he knew all too well how good situations could go bad quick. Being scared half to death on a first mission wasn't a good way to start duty on Atlantis. Although, it allowed him to see what the new marines were made of and how they handled a surprise attack. It was important to him that everyone could handle themselves on missions as it wasn't only themselves that had to look after; it was the others in the team as well. As they reached the tree line they had gotten in to a loose herring bow formation so they could watch either side of the forest.

"Why am I here again, there's not even any energy readings" McKay complained for the third time and they had only been walking for half an hour.

"McKay! You are a part of the team so you come on our missions, now keep moving. And hey you never know when we might need your genius." Sheppard replied sarcastically knowing what needed to be said to keep the reluctant scientist going.

"Oh right…fine" said McKay remembering all the times his genius was needed as Sheppard pushed him along.

Teyla and Ronon just smiled as they were listening to the friendly banter between the two. They had become used to how they worked with each other as a team. Both Teyla and Ronon were looking out for any dangers that could come up at any moment. They could imagine that the new Lt may be thinking that Sheppard and McKay hated each other, that is what most thought at first. They knew that it was because they were such good friends; they knew how to talk to each other in such away that was not offensive to either of the two.

"Why couldn't… we have… brought the… jumper" said McKay slightly out of breath from the brisk walking pace that they had fallen into while following a lightly treaded path, through a sparse forest. While the forest wasn't that packed, there was no spot big enough to land a puddle jumper in, bar the open field near the gate. There were small clearings but again not big enough to land.

"McKay, just keep moving"

"Anyway McKay, you could use the exercise" came an amused reply from Ronon.

Mike had heard all of the conversation and how the team reacted to each other, he could tell that the team worked well together. He now doubted what the trust had said about the goings on of Atlantis. He shook his head and decided not to carry on with that train wreck of a thought. Maybe it wasn't so bad to be with the flagship team, they were slightly amusing and he could imagine all the fun or trouble they may get up to while off duty. He had been reminded at the pre mission briefing that even after all the excitement of the past missions reports, that was not what all the teams did and they were first and for most explores, looking for allies against the Wraith or trading partners such as the Athosians.

They had come to another small clearing when, out of the blue the noises of the birds and other unknown creatures native to the forest stopped and there was familiar whirling noise. Mike couldn't place the sound, it sounded slightly like a small craft though nothing earth built. As soon as the noise had started Sheppard and his team had gripped their weapons like they had hundreds of times before. They were well practiced in theses sorts of situations, even McKay.

"Everyone fall back to the gate now!" Sheppard ordered, hoping that the Wraith dart hadn't blocked their escape through the gate like they had in the past. The Wraith were well known for opening the gate again to stop people from escaping. If they weren't seen then maybe they could get back and dial home. It was only one dart so; Sheppard had made the assumption that the Wraith were also scouting the planet for any life.

"What are they Sir?" Mike shouted over the noise of the ship as he looked up and actually saw what had made the noise. He had seen many aircrafts before but the dart was nothing like anything on earth. It was streamlined to a point; he could see why they were called darts.

"It's the Wraith now move it Lt"

While Mike had been reading the reports of past missions back in Atlantis, he had read how quick a nice clam mission could turn into one of life and death but, not believed it until now. He had only read reports and seen a few pictures of Wraith but, they couldn't tell you how you'd actually feel going up against one, or whether he'd be ready to face one. 'Well here goes nothing' he thought as a beam of light had suddenly appeared in front of him.

'Oh crap' Sheppard thought as he saw the Wraith materialise right in front of the Lt. Who, had frozen in fear at the new enemy before him. They hadn't made it back to the gate yet, he had to come up with something fast to get everyone back home. He did the only thing that came to him.

"Teyla, McKay! Get back to the gate, dial Atlantis, and tell them that we are going to need back up. Try to keep the gate open so the wraith can't dial out and block us. We're going to help the Lt, Ronon you're with me" orders Sheppard as he swings into action. 'Hopefully the dart doesn't notice them going back' he thinks wishing them luck. Both Ronon and Sheppard had thought something was going to go wrong, they had just hoped that it hadn't of happened when there was a newbie around.

Lt Roads had been startled at the appearance of the warrior looking Wraith creatures that had appeared. He was equally startled to see one of them collapse to the ground, engulfed in the red light of Ronon's energy weapon. He figured it was about time for him to shoot back, he quickly thought back to his marine training, remembered what to do an aimed his P-90 at the creatures coming towards him. He noticed that while he had been shocked His commanding officer and Ronon had started the fire-fight with out him. At this point he was glad that he had been put with the most experienced team, he also saw the ruthlessness that he had heard about from others coming from Sheppard. Sheppard wasn't going easy on the Wraith, it was like he had a vendetta against them and, Ronon had a look of pure malice in his eyes; he hated them more than Sheppard. They were both killing them without mercy. At this point the dart had decided to show it's self again. With only P-90s they couldn't hope to do much damage but, if they got a lucky shot off then they could hopefully cause the craft to crash.

With the four Wraith drones dead in bloody heaps on the now blood soaked grass, the Lt followed Sheppard's lead to shoot at the dart hoping to cause some sort of damage to its hull. While he was firing on the ship above, he couldn't help but think about how long it had taken for these Wraith to go down, it had taken a lot of fire power. 'No wonder people are scared of them' he thought sneaking a look over at the bodies he also, couldn't help but notice how when they were facing you, how menacing they looked. Ronon was covering them on the ground while he and the Lt Col were firing at the dart. They were running out of ammunition which, considering how much took to kill just four was a bad thing if any more came along to the party. Sheppard had hoped that Telya and McKay had made it to the gate by now. However, looking at the time and remembering how far they had walked from the gate then, they wouldn't be there for another 20-30minutes and that was if they weren't stopped.

x-X-x

"Dr McKay, we must hurry to the gate to get help" said Telya as calmly as ever after, she had realised that McKay had slowed a little.

"Yes, yes I know" said McKay quickly as he stumbled again. His face speaking the unspoken questions such as 'Will they be ok?' to which Teyla replied instinctively.

"They will be fine; they are trained and experienced fighters. However, they may need our help in bringing the dart down. We must move faster" she of course knew that they could fight yet, she still worried about them. Experience of being a leader had taught her that remaining clam in these situations helped a great deal as, it helped to calm scared people down which in turn created less panic to which Rodney was very prone to. Ahead if them they could see the clearing where the gate was situated. An open field was bad when it came to running away from enemies as they could easily been seen. Both McKay and Telya could hear the sounds of P-90s and Ronon's blaster in the distance; the sounds were being carried by the wind that had picked up about an hour ago.

Teyla and Rodney were both cautious as they moved from the cover that the trees provided. They headed towards the DHD and the gate with their weapons raised, just in case the Wraith had decided to sneak up behind them. As soon as McKay was there he dialled the addresses for Atlantis.

"Atlantis this is McKay, the Wraith decided to pop in unannounced, Sheppard, Ronon and the new Lt are trying to bring a Wraith dart down as we speak but, we don't have anything here that can destroy it" he said as fast as humanly possible, as was McKay's way when he was scared or panicking.

"McKay! Calm down, what happened?" came Dr Weir's voice over the radio, cutting off McKay free-flowing speech.

"What…. I just told you, we need back up now" McKay replied slightly flustered as to why Dr Weir wasn't getting the message that they need help now or they were 'so screwed'.

In the background they heard the engines of the dart give out. They turned to see it come hurtling towards the ground near to wear Sheppard and the others were. One of them must have got in a lucky shot he thought. They heard the crash from where they were. However just before they heard it they saw a bright light that could only mean one thing, which was that there were more Wraith on the ground. The pilot must have been able to release them in time. They had only been able to see the light from the distance because dusk was approaching the planet and the light was fading.

"Sheppard, what's going on?" said McKay completely forgetting that he was also on the radio to Elizabeth too.

"Not now McKay we're busy" Sheppard succinctly replied over the sound of more gun fire. Sheppard thought that must mean that McKay must have been at the gate by now which was good because they were really low on things to fire at the Wraith. At least he knew that help would be on its way soon.

"Rodney, what's happening?" Weir said over the radio panic clearly creeping its way into her voice.

"I don't know, just send help sooner rather than later"

"It's on its way, stay safe"

The radio crackled off. Teyla and McKay stayed by the gate waiting for the promised help. Both wanted to go back and help them however, Sheppard had ordered them here to keep them out of the way and safe. They both hated the fact that Sheppard wanted to protect everyone possible, no matter the danger to himself, that is also the same reason they respected him as well. Ronon would keep him out of trouble or at least try to. Somehow Sheppard always had a way of finding trouble. They weren't sure of the new Lt Roads and how he would handle being up against the Wraith but, they were sure that John would protect the kid anyway he could.

The ground and the gate shook a little, as it reactivated bringing the help they'd requested. At the same time there had been a sound of an explosion, of birds flying away out of the trees and then nothing but silence.

Lorne and his men had just stepped trough the gate when the explosion occurred. Lorne looked up to where the disturbance had come from. It was in the direction of the fire-fight that had been going on between Sheppard, Ronon, Lt Roads and the Wraith. A funnel of smoke was rising from the trees and there were no longer any sounds of battle. Teyla reached for her radio.

"John? Ronon? Are you and the Lt ok?" Teyla knew that there was something wrong as did the others around her. She waited for the answer to her question. The question remained unanswered as did her silent pleas for them to answer. All she heard was static…

x-X-x

TBC

I know evil cliff-hanger I couldn't help it sorry, hope you enjoyed it.

The next chapter should be up next week at some point hopefully.

Just fixed some mistakes i saw oops. Please review, i'd love to know what you all think.