Minor Spoilers.. Logan and company are hiding in a storage area beneath one of the two churches there. They have a quest that i havent done yet, so dont know if it is any good. BUT there is a really nice unique melee weapon in the fire station. VERY worth getting if melee is your bag.
I didn't try shooting Logan, but I do know pickpocketing him does not get the key. The cave you grab the goods for his quest isn't difficult to find, but it was a very glitchy area in my game. I have the Animal Friend perk, too, so the Coyotes didn't bother me. It's been a while, but I think those are the only enemies around that area.
The Knock Knock is well worth it and I don't even have a high melee character.
You have to exhuast all of the conversations with Logan, Hack into the computer next to him, talk to Logan again, find a certain cave north of Nipton?(the town with the lottory winner,) take the package back to Logan, then all of you go to the police station and loot the place, he gets everything with "NCR" infront of the name, then you cruise over to the firehouse, squish some bugs, loot the firehouse, Knock Knock is in the bathroom stalls, turn in all of the "NCR" stuff, then SPOILER... After spoiler, dont pick up any of the "NCR" gear you find...
Longest sentence of the thread winner: ME
UNO! Currently playing: Borderlands and Fallout: New Vegas