You have to retry those military consume events until you get one that is actually doable, running across the whole city in 3 minutes isn't. Even worse, if you could choose the order of targets, you could make it, but when they make you go half city for one, then half a city back, I was starting to nerdrage.
The infiltration events are easy, just learn to loose alarm quickly, then you can just fly to the entrance and get right in.