jp1_02

D
As Amended Through 15 March 2013
damage assessment — 1. The determination of the effect of attacks on targets. 2. A
determination of the effect of a compromise of classified information on national
security. (JP 3-60)
damage criteria — The critical levels of various weapons effects required to create
specified levels of damage. (JP 3-60)
damage estimation — A preliminary appraisal of the potential effects of an attack. See
also attack assessment. (JP 3-60)
danger close — In close air support, artillery, mortar, and naval gunfire support fires, it is
the term included in the method of engagement segment of a call for fire which
indicates that friendly forces are within close proximity of the target. The close
proximity distance is determined by the weapon and munition fired. See also final
protective fire. (JP 3-09.3)
dangerous cargo — Cargo which, because of its dangerous properties, is subject to special
regulations for its transport. (JP 4-01.5)
database — Information that is normally structured and indexed for user access and review.
Databases may exist in the form of physical files (folders, documents, etc.) or formatted
automated data processing system data files. (JP 2-0)
data element — 1. A basic unit of information built on standard structures having a unique
meaning and distinct units or values. 2. In electronic recordkeeping, a combination of
characters or bytes referring to one separate item of information, such as name, address,
or age. (JP 1-0)
date-time group — The date and time, expressed as six digits followed by the time zone
suffix at which the message was prepared for transmission (first pair of digits denotes
the date, second pair the hours, third pair the minutes, followed by a three-letter month
abbreviation and two-digit year abbreviation.). Also called DTG. (JP 5-0)
datum (geodetic) — 1. A reference surface consisting of five quantities: the latitude and
longitude of an initial point, the azimuth of a line from that point, and the parameters of
the reference ellipsoid. 2. The mathematical model of the earth used to calculate the
coordinates on any map. Different nations use different datum for printing coordinates
on their maps. (JP 2-03)
D-day — See times. (JP 3-02)
de-arming — An operation in which a weapon is changed from a state of readiness for
initiation to a safe condition. Also called safing. (JP 3-04)
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