Helicopter Anti-Submarine Squadron Fourteen's motto is 'Day and Night, Lightning Strikes!'.
The motto of Captain Submarine is 'The Toast Masters!'.
Silent Service
Marine Corps Security Force Regiment's motto is 'Speed, Surprise, and Violence of Action'.
United States Army Military District of Washington's motto is 'Haec Protegimus'.
United States Army Reserve Command's motto is 'Twice the Citizen'.
United States Army Corps of Engineers's motto is 'Essayons'.
United States Army Forces Command's motto is 'Freedom's Guardian'.
The submarine service has never really had one official motto, though "Silent Service" is the most commonly used when referring to it. Each submarine and submarine squadron usually goes by its own motto, if they've established one, which is typical for individual units.
Marine Corps Security Force Regiment's motto is 'Speed, Surprise, and Violence of Action'.
United States Army's motto is 'This We'll Defend'.
United States Army Military District of Washington's motto is 'Haec Protegimus'.
The motto of I Corps - United States - is 'America's Corps
Detroit Police Department's motto is 'Making Detroit a safer place to live, work, and visit.'.
The motto of Miss Earth United States is 'Beauties for a Cause'.
Second United States Army's motto is 'Second To None'.
The motto of United States is 'In God We Trust'.
United Kingdom Accreditation Service's motto is 'Delivering confidence'.
United States Army Reserve Command's motto is 'Twice the Citizen'.
United States Army Institute of Heraldry's motto is 'Latin for'.