JP 3-50 National Search and Rescue Manual Vol I - US Navy

than 6 feet (2 meters) apart, intermediate lines will be inserted so
that adjacent marks are not more than 6 feet apart.
B. Ejection seat mechanisms. Many military aircraft are fitted
with ejection seats. If a pilot ditches or crash lands rather than
bailing out, and has to be removed from the aircraft while still in the
ejection seat, extreme care should be taken to avoid triggering the seat
mechanism. The activating handles are indicated by red or black/yellow
coloring.
C. Chemical and radiation hazards. Rescue personnel must exercise
caution when approaching or boarding an unfamiliar vessel, or when
approaching a vehicle or aircraft crash site. In addition to obvious
dangers of fire and explosion, there may be danger of exposure to
chemicals or radiation. For example, many fishing vessels use liquid
ammonia to refrigerate their catch. If a fishing vessel crew is sick or
unconscious, there may be an ammonia leak in the refrigeration system.
The Chemical Hazard Response Information System (CHRIS) Manual provides
information on chemical hazards, symptoms following exposure, and
treatment of exposure victims. It also shows hazardous material labels
that should, but may not, accompany chemicals.
760 RU RELIEF AND RETURN TO BASE
RU relief on scene follows the same general procedures as the
relief of SRUs on scene. When possible, a complete briefing should be
given to the relieving RU. The time required for an RU to return to
base should be considered for units which have a limited on scene
endurance. The SMC
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