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Military Terms and Definitions

K-day — The basic date for the introduction of a convoy system on any particular convoy
lane. See also D-day; M-day.

key employee — Any Reservist identified by his or her employer, private or public, as
filling a key position.

key facilities list — A register of selected command installations and industrial facilities of
primary importance to the support of military operations or military production
programs. It is prepared under the policy direction of the Joint Chiefs of Staff.

key point — (*) A concentrated site or installation, the destruction or capture of which
would seriously affect the war effort or the success of operations.

key position — A civilian position, public or private (designated by the employer and
approved by the Secretary concerned), that cannot be vacated during war or national

keystone publications — Joint doctrine publications that establish the doctrinal foundation
for a series of joint publications in the hierarchy of joint publications. These
publications are signed by the Chairman of the Joint Chiefs of Staff. Keystone
publications are provided for joint personnel support, intelligence support, operations,
logistic support, plans, and communications systems support. See also capstone
publications; joint publication. (CJCSI 5120.02A)

key terrain — (*) Any locality, or area, the seizure or retention of which affords a marked
advantage to either combatant. See also vital ground. (JP 2-01.3)

kill box — A three-dimensional area used to facilitate the integration of joint fires. (JP 3-09)

killed in action — A casualty category applicable to a hostile casualty, other than the victim
of a terrorist activity, who is killed outright or who dies as a result of wounds or other
injuries before reaching a medical treatment facility. Also called KIA. See also
casualty category.

killing zone — An area in which a commander plans to force the enemy to concentrate so
as to be destroyed with conventional weapons or the tactical employment of nuclear

kill probability — (*) A measure of the probability of destroying a target.

kiloton weapon — (*) A nuclear weapon, the yield of which is measured in terms of
thousands of tons of trinitrotoluene explosive equivalents, producing yields from 1 to
999 kilotons. See also megaton weapon; nominal weapon; subkiloton weapon.

kite — (*) In naval mine warfare, a device which when towed, submerges and planes at a
predetermined level without sideways displacement.



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