This glitch is amazing, It worked before the last patch but I'm not sure if they have patched it
Basically, get a Stealth Bomber, a 14 support point streak.
Then find somewhere to hide, pull out the laptop and as soon as you see the green screen press Y.
You should have the laptop out, but your gun in the background. You can then position the Stealth Bomber and when you have pressed A,
It will close the laptop and you will still have the Stealth Bomber, I once did this for about 5 mins and got about 40 kills!!!
I hope you will be able to do it as it is really fun.
Good luck!
