time fuze-(DOD, NATO, IADB) A fuze which contains a graduated time element to regulate the time interval after which the fuze will function. See also fuze.

time of attack-(DOD, IADB) The hour at which the attack is to be launched. If a line of departure is prescribed, it is the hour at which the line is to be crossed by the leading elements of the attack.

time of delivery-(DOD, IADB) The time at which the addressee or responsible relay agency receipts for a message.

time of flight-(DOD, NATO, IADB) In artillery and naval gunfire support, the time in seconds from the instant a weapon is fired, launched, or released from the delivery vehicle or weapons system to the instant it strikes or detonates.

time of origin—(DOD, IADB) The time at which a message is released for transmission.

time of receipt-(DOD, IADB) The time at which a receiving station completes reception of a message.

time on target—(DOD) 1. Time at which aircraft are scheduled to attack/photograph the target. 2. The actual time at which aircraft attack/photograph the target. 3. The time at which a nuclear detonation is planned at a specified desired ground zero.

time on target-(NATO) 1. The method of firing on a target in which various artillery units and naval gunfire support ships so time their fire as to assure the initial rounds strike the target simultaneously at the time required. 2. Time at which aircraft are scheduled to attack/photograph a target.

time on target (air)-See time on target(DOD) Parts 1 and 2.

time over target conflict-(DOD) A situation

wherein two or more delivery vehicles are scheduled such that their proximity violates

the established separation criteria for yield, time, distance, or all three.

time over target (nuclear)-See time on target-(DOD) Part 3.

time-phased force and deployment data(DOD) The computer-supported data base portion of an operation plan; it contains timephased force data, non-unit-related cargo and personnel data, and movement data for the operation plan, including:

a. In-place units.

b. Units to be deployed to support the operation plan with a priority indicating the desired sequence for their arrival at the port of debarkation.

c. Routing of forces to be deployed.

d. Movement data associated with deploying forces.

e. Estimates of non-unit-related cargo and personnel movements to be conducted concurrently with the deployment of forces.

f. Estimate of transportation requirements that must be fulfilled by common-user lift resources as well as those requirements that can be fulfilled by assigned or attached transportation resources.

Also called TPFDD.

time-phased force and deployment list—(DOD) Appendix 1 to Annex A of the operation plan. It identifies types and/or actual units required to support the operation plan and indicates origin and ports of debarkation or ocean area. It may also be generated as a computer listing from the time-phased force and deployment data. Also called TPFDL.

time-sensitive targets-(DOD) Those targets requiring immediate response because they pose (or will soon pose) a clear and present danger to friendly forces or are highly lucrative, fleeting targets of opportunity.

time slot-(DOD, NATO) Period of time during which certain activities are governed by specific regulations.

total materiel assets-(DOD) The total quantity of an item available in the military system world-wide and all funded procurement of the item with adjustments to provide for transfers out of or into the inventory through the appropriation and procurement lead-time periods. It includes peacetime force materiel assets and war reserve stock.

total materiel requirement-(DOD, IADB) The sum of the peacetime force material requirement and the war reserve material requirement.

total mobilization-See mobilization.

total nuclear war-(DOD) Not to be used. See general war.

total overall aircraft inventory-(DOD) The sum of the total active aircraft inventory and the inactive aircraft inventory.

total pressure-(DOD, NATO) The sum of dynamic and static pressures.

total war-(DOD) Not to be used. See general

war.

touch-down-(DOD, NATO) The contact, or moment of contact, of an aircraft or spacecraft with the landing surface.

touch down zone-(DOD, NATO) 1. For fixed wing aircraft-The first 3,000 feet or 1,000 meters of runway beginning at the threshold. 2. For rotary wings and vectored thrust aircraft-That portion of the helicopter landing area or runway used for landing.

TOW (missile)-(DOD) A component of a tubelaunched, optically tracked, wire-command link guided missile weapon system which is crew-portable.

toxic chemical, biological, or radiological attack-(DOD, IADB) An attack directed at man, animals, or crops, using injurious agents of radiological, biological, or chemical origin.

toxin agent (DOD) A poison formed as a specific secretion product in the metabolism of a vegetable or animal organism as distinguished from inorganic poisons. Such poisons can also be manufactured by synthetic processes.

Tracer-(DOD) A twin-reciprocating engine, airborne radar platform designed to operate from aircraft carriers. Its mission is the detection and interception control of airborne targets. Designated as E-1B.

track-(DOD, IADB) 1. A series of related contacts displayed on a plotting board. 2. To display or record the successive positions of a moving object. 3. To lock onto a point of radiation and obtain guidance therefrom. 4. To keep a gun properly aimed, or to point continuously a target-locating instrument at a moving target. 5. The actual path of an aircraft above, or a ship on, the surface of the earth. The course is the path that is planned; the track is the path that is actually taken. 6. One of the two endless belts on which a full-track or half-track vehicle runs. 7. A metal part forming a path for a moving object, e.g., the track around the inside of a vehicle for moving a mounted machine gun.

track—(NATO) 1. To display or record the successive positions of a moving object; also to lock on to a point of radiation and obtain guidance therefrom. 2. To keep a gun properly aimed, or to point continuously a target-locating instrument at a moving target. 3. The projection on the surface of the earth of the path of a space vehicle, aircraft or ship, the direction of which path at any point is usually expressed in degrees from North (true, magnetic, or grid). 4. One of two endless belts on which a full-track or half-track vehicle runs. 5. A metal part forming a path for a moving object. 6. A mark left on the ground by the passage or presence of a person or object.

track correlation-(DOD) Correlating track information for identification purposes using all available data.

track crossing angle-(DOD) In air intercept,
the angular difference between interceptor
track and target track at the time of inter-
cept.

Tracker-(DOD, IADB) A twin-reciprocating-

engine, antisubmarine aircraft capable of op-
erating from carriers, and designed primarily
for the detection, location, and destruction of
submarines. Designated as S-2.

track handover-(NATO) In air defense, the
process of transferring the responsibility for
production of a track from one track produc-
tion area to another.

tracking-(DOD, NATO) +. Precise and continu-
ous position-finding of targets by radar, opti-
cal, or other means. (DOD) 2. In air inter-
cept, a code meaning, "By my evaluation,
target is steering true course indicated."

track mode-(DOD, NATO) In a flight control
system, a control mode in which the ground
track of an aircraft is maintained automati-
cally.

track production-(NATO) A function of a sur-
veillance organization in which the active and
passive radar inputs are correlated into coher-
ent position reports, together with historical
positions, identity, height, strength and direc-
tion.

track production area-(DOD, NATO) An area
in which tracks are produced by one radar
station.

track symbology—(DOD, NATO) Symbols used
to display tracks on a data display console or
other display device.

track telling-(DOD) The process of communi-
cating air surveillance and tactical data infor-
mation between command and control sys-
tems or between facilities within the systems.
Telling may be classified into the following
types: back tell; cross tell; forward tell; lateral
tell; overlap tell and relateral tell.

track telling-(NATO) The process of communi-
cating air surveillance and tactical data infor-
mation between command and control sys-
tems or between facilities within systems.
Telling may be classified into the following
types:

1. Back tell-The transfer of information
from a higher to a lower echelon of com-
mand.

2. Cross tell-the transfer of information be-
tween facilities at the same operational
level. Also called lateral tell.

3. Forward tell-The transfer of information
to a higher level of command.
4. Lateral tell-See cross tell.

5. Overlap tell-The transfer of information
to an adjacent facility concerning tracks
detected in the adjacent facility's area of
responsibility.

6. Relateral tell-The relay of information
between facilities through the use of a
third facility. This type of telling is appro-
priate between automated facilities in a de-
graded communications environment.

tractor group-(DOD, IADB) A group of land-
ing ships in an amphibious operation which
carries the amphibious vehicles of the landing
force.

trafficability-(DOD, NATO, IADB) Capability
of terrain to bear traffic. It refers to the
extent to which the terrain will permit con-
tinued movement of any and/or all types of
traffic.

traffic circulation map-(DOD, IADB) A map
showing traffic routes and the measures for
traffic regulation. It indicates the roads for
use of certain classes of traffic, the location of
traffic control stations, and the directions in
which traffic may move. Also called a circula-
tion map. See also map.

traffic control police (road transport)-(NATO)
Any persons ordered by a military command-
er and/or by national authorities to facilitate
the movement of traffic and to prevent and/
or report any breach of road traffic regula-
tions.