Originally Posted by Terminator
I had to travel all over the map to find Enough NCR Officers for the Bear Challenge as there are loads that don't count
! For some reason several of the Kill challenges generate severe lag when you start killing the required targets.
And I actually needed to check the Fallout Wikia to find places where named NCR officers are. I had already cleared out all the NCR stations (two named officers per station) and the Mojave Outpost, but after that, I was afraid I only had the Embassy at the Strip left... and at that time, the counter was stuck at 12. Tried the Hoover Dam, but all I found were soldiers and engineers.
Of course, i forgot Camp McCarran, where at least three named officers are to be found (I stopped looking after getting kill number 15). Unfortunately, Camp McCarran is among the laggiest locations in the game for me, even before I finished the main quest months ago, so that required a reboot or three.