It is a little known fact that most of the guards at Area 51 are kangaroos. This is because they are very tough and because Australians are always willing to blindly follow America without question and so are the most trusted to defend such a secret location. However, being the meme-obsessed nerds they are, the raiders are experts on the Great Emu War of the 1930s, where those flightless bastards totally thumped the Australian army! So, it was only natural for them Kyles to recruit them, and the emus were only too happy to whoop some Aussie ass once again!
When they jumped over the wall, the poor guards had no chance, and were quickly overpowered. The emus donned their uniforms and then proceeded onto Stage 2: infiltration. And people think the raid was a failure...just you wait (laughs in Australian)

I know this is a little late to the party, and yes that is a pathetic attempt at camo ^^;