Discretion is everything. Any time we'd hit a compound, we would pore over the intelligence, assess whether this was a likely badguy, whether they were a key player or just a low level radical, etc.
Equally important, are the people around said badguy likely also bad or innocent bystanders? If they're probably bad we want to capture them all together. If they're probably innocent we want to wait until the dude wanders off to minimize the risk to civilian life and property, even if that means greater risk to us.
Once you actually get to the target location, it starts all over again, only with less time and information. Is that a shovel or an RPG? I can't quite tell from here. Looks like an RPG -- what if I'm wrong? There's a house behind him, what's the risk if I wait 30 seconds...?
It's a real profession that takes real expertise by people with real emotions.