Add a simple Project Nevada visor overlay(heat and night vision) to Death Squad Trooper's gas mask, an armor from Beyond Boulder Dome quest mod(http://www.nexusmods.com/newvegas/mods/46907/?)

Install:

Just drop the .esp file to your Data directory, and check in FOMM or NMM. The file should be under Project Nevada, and Beyond Boulder Dome.

For Death Squad Elite, visit: http://www.nexusmods.com/newvegas/mods/55997