They don't appear out of nowhere, they come in behind you through doors that you can't open, and only when you're not their to see them open them... YEH RIGHT!
Everybody else has done it. Some of us (myself included) actually enjoy it that little bit more because of the extra challenge. And as for it being unrealistic? Hello... IT'S A GAME.
Besides, in real life do you really think the terrorists wouldn't have the brains to set up an ambush?
An ambush that makes no sense up to a point but then again... when you have lack of imagination, lack of skills and press for time, things of this nature will come up.
There was a link that would give you the chance to open up all the maps and you just can easily skip that map. I know I had issues with this and I came baack to finish it just because I hate to loose and love to beat a challenge.
I also believe that having this type of ambushes get old in a hurry but... nothing we can do about it and you'll encounter more of it in Vegas2... Whooo Hoooo!
I agree with You guy's and I finally got through that mission
But it's so damn frustrating when You keep getting killed