The mission milestones seem to refer to American historical figures involved in the Texas Revolution (1835-1836), when Texas was a colony of Mexico: Travis, Bowie, Crockett, Austin, Houston, Fannin.
"UXO" is shorthand for "unexploded ordnance".
HAHO is short for High Altitude High Opening as oppose to HALO (High Altitude Low Opening) with respect to the opening of the parachute. One would conduct the latter in order to reduce the risk of enemy detection before landing.
A "Technical" in Military Parlance is a Non-Standard Tactical or Light Cavalry Vehicle.
MSR is short for Main Supply Route.