S – Sierra
morse code – dot dot
dot
Sailor or seaman – an
enlisted member of the US Navy, but does not include members of construction
battalions [CBs/Seabees] who are called constructionmen.
SEAL - sea-air-land team —
US Navy forces organized, trained, and equipped to conduct special operations. Similar to Army Ranger.
Self-loading cargo - passengers boarding a transport
aircraft.
Semper Fi – short for
Semper fidelis, the Latin phrase that means "always faithful" or
"always loyal". In the United States it is best known as
the motto of the United States Marine Corps.
SNAFU - “situation
normal - all fouled up.” Originally “all f***ed up”
Sniper – a soldier highly trained in long range rifle marksmanship and field skills.
Special agent — A person, either United States military or civilian, who is a specialist in military security or the collection of intelligence or counterintelligence information.
Sniper – a soldier highly trained in long range rifle marksmanship and field skills.
Special agent — A person, either United States military or civilian, who is a specialist in military security or the collection of intelligence or counterintelligence information.
Special forces — US Army
forces organized, trained, and equipped to conduct special operations with an emphasis on unconventional warfare capabilities.
Speed of sound — the speed
at which sound travels. At sea level in the International Standard Atmosphere, this speed is 1108 ft/second, 658 knots,
1215 km/hour.
SONAR — an
acryonym for SOund Navigation And Ranging.
A sonic device is used primarily for the detection and location of underwater objects.
Soldier - one who fights as part of an organized land-based
armed force, for example the US Army. A
soldier can be an enlisted person, a non-commissioned officer, or an officer.













