I know exactly what you mean!!!
I'm looking for the Bazooka Team myself and the game has come to an enormous standstill! I have taken out every sniper (even the one sitting between the buildings near the circular road). I've entered every single building twice and still nothing. I have 5 men now uninjured waiting to go through the gates with me. Are these not the Bazooka Team?!?? If they are then the game isn't recognising them because the gates still won't open for me.

What do I do???