There are two places that I am aware of. The current usage of the acronym refers to "Physical Training" - exercise programs operated by the different branches of the armed forces.
The Navy used to operate small boats called "Patrol Torpedo" boats around WWII. The most famous of these was PT-109 which was commanded by John F Kennedy.
The Navy used to operate small boats called "Patrol Torpedo" boats around WWII. The most famous of these was PT-109 which was commanded by John F Kennedy.
