Soldier in foreground is Rob Sherwin, Div HQ & 3AD Band,
who has provided us with the following info about "MOPP"
Alerts off the Internet:
MOPP: Mission Oriented Protective Posture, a short
MOPP Level 0: The mask is worn in a carrier on the soldier's
hip. Chemical-protective gear is issued, prepared, and located
so the soldier can retrieve it within 5 minutes. Level 0 is used
during periods of increased alert when the enemy has chemical/biological
employment capability, but there is no indication of use in the
MOPP Level 1: The chemical overgarment (pants and jacket)
are worn, and the rest of the equipment is carried. Level 1 is
used when it is determined that chemical/biological attack within
the theater of operations is possible.
MOPP Level 2: The overgarment is worn, and the overboots
are worn. The mask, hood and gloves are carried in the mask-carrier,
strapped to the hip. Level 2 is initiated when chemical/biological
attack is probable.
MOPP Level 3: The overgarment, mask/hood, and overboots
are worn, but the protective gloves may be carried. Level 3 is
used after chemicals have been used by the enemy, but in areas
with negligible hazard.
MOPP Level 4: Everything is worn. This condition is
used during/after an attack when chemical weapons have been used
or are suspected.