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decision is ordered executed. It is that part of strategic warning lead time
available to the highest levels of government(s) to determine the strategic course
of action to be executed.
STREAD Standard TRE Display.
STRICOM Simulation, Training, and Instrumentation Command (USA term).
Structured
Attack
An attack in which the arrival of warheads on their diverse targets is precisely
timed for maximum strategic impact.
Structured
Design
A disciplined approach to software design that adheres to a specified set of rules
based on principles such as top-down design, stepwise refinement, and data
flow analysis.
Structured
Program
A program constructed of a basic set of control structures, each one having one
entry point and one exit. The set of control structures typically includes:
sequence of two or more instructions, conditional selection of one of two or more
instructions, conditional selection of one of two or more instructions or
sequences of instructions, and repetition of an instruction or a sequence of
instructions.
STRV Space Technology Research Vehicle.
STS See Space Transportation System.
STSC Software Technology Support Center.
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281
STT (1) Small Tactical Terminal (USAF term).
(2) Stockpile-to-Target (US Army term).
STTR Small Business Technology Transfer.
STU Secure Telephone Unit.
STW Strike Warfare.
STWC Strike Warfare Commander.
STWG Simulation Tools Working Group.
Subassembly Two or more parts joined together to form a unit, capable of disassembly, which
is only a part of a complete machine, structure, or other article.
Subcontractor A contractor who enters into a contract with a prime contractor.
Subject Security
Level
A subject's security level is equal to the security level of the objects to which it
has both read and write access. A subject's security level must always be
dominated by the clearance of the user and with the associated subject.
Submarine-
Launched
Ballistic Missile
(SLBM)
A ballistic missile launched from a submarine, with a range of 3,000 to 6,000
miles.
SUBROC Submarine Rocket.
Subsystem A functional grouping of components that combine to perform a major function
within an element, such as attitude control and propulsion.
Subtractive
Defense
First come first engaged as long as weapons last.
SUCCESS Synthesized UHF Computer Controlled Equipment Subsystem.
Succession of
Command
The planned or actual sequence in which subordinate commanders, in turn,
become de facto commanders of a senior organization. Devolution of command
is a synonymous term.
SUM Software Users Manual (Computer term).
Sunk Costs The costs of resources already committed or spent. In comparing two
alternatives, such costs are "non-additive," and they are not germane to
decisions about future use of resources.
Sup Pro Supporting Programs (MDA term).
Super Survivable Solar Power Subsystem Demonstrator.
Super Radiance The process used by a super radiant laser to generate or amplify a laser beam in
a single pass through a lasant material, or, in the case of a free electron laser,
through an electric or magnetic field in the presence of an electron beam. Super
radiance is actually a form of stimulated emission. Also known as
superfluorescence, or amplified spontaneous emission.
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282
Superradiant
Laser (SRL)
A laser in which the beam passes through the lasant only once; mirrors are not
required for the operation of such a laser, as they are with more conventional
lasers which are sometimes called "cavity lasers" to distinguish them from
superradiant lasers. Free electron lasers may also be superradiant; the laser
beam of a superradiant free electron laser would pass once through the electric
or magnetic field (instead of a lasant) in the presence of an electron beam.
Supervisory
Programs
Computer programs that have the primary function of scheduling, allocating, and
controlling system resources rather than processing data to produce results.
Supplemental
Appropriation
An appropriation enacted as an addition to a regular annular appropriation act.
Support
Equipment
All system equipment required to support the ground and flight phases of the
mission. Support equipment includes aerospace ground equipment (AGE),
maintenance ground equipment (MGE), transportation and handling (T&H)
equipment, and equipment used to support system deployment (i.e., assembly
tools and fixtures, test and checkout equipment, personnel support and
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