Marine skills, part 2

First aid: medical training to support life until a medical treatment facility is available
- Field surgery (to stabilize critical damage)
Wheeled vehicles: ability to operate a variety of wheeled vehicles, both combat and support
Tracked vehicles: ability to operate a variety of tracked vehicles, both combat and support
Aircraft: ability to operate a variety of airborne vehicles, both combat and support

Forward observer: acting as a spotter for remote fire
Indirect fire: ability to accurately hit targets out of sight
Electronics: ability to design, build, and repair electrical circuits and use electronic equipment

Computers: ability to use and repair computers and computer-controlled equipment

Supply: ability to acquire hard-to-find gear and have equipment delivered quickly
Mountaineering: ability to scale mountains and navigate in mountainous terrain
Parachute: ability to successfully use a parachute and land on target

HALO (High Altitude, Low Opening)-military version of high altitude skydiving requiring use of oxygen tanks
HAHO (High Altitude, High Opening)-using a parachute to glide to a target from several thousand meters

Small boats: small-craft navigation and general seamanship
Harsh environments: ability to use environmental suits and knowledge of environmental tactics
- No atmosphere
- Non-terra formed environments
Xenomorphs: ability to identify aliens and determine information such as feeding and breeding habits, habitat, etc.
Navigation: ability to use a map & compass, travel overland using landmarks, track movement using stars, etc.
Stealth: moving silently without detection
Chemistry: knowledge of basic chemical reactions and compounds (useful for making improvised explosives)