The best way to beat Homeland Security on Vetran

The best method that I found to beat this level. It's easier if you have someone else to revive you. When you spawn, grab the claymores then the sentury gun and then run to the left into the building behind the gas station building. go inside and have your partner grab the other sentury gun and both run behind the counter. Place both sentury guns and have the one on the right aimed a little more right so it can get the guys who come from the side. This will work for the first few waves, but sometimes, the guns will die. When you face the helicopters, and if you missed with your RPG's or ATH4S, it will take about 3 or four clips of both of your guns to shoot it down. If you follow these tips, then you will beat the level. If you have any way to beat any hard spec ops, post a comment with your tips.