OST meaning in Governmental ?

Answer: What is Office of Secure Transportation mean?

The U.S. Department of Energy/National Nuclear Security Administration's Office of Secure Transportation (OST) provides safe and secure transportation of nuclear weapons and components and special nuclear materials, and conducts other missions supporting the national security of the United States of America.

reference

Full Form	Category
Office of Science and Technology	Academic & Science
Ocean Surface Temperature	Academic & Science
Ocean Science Trust	Academic & Science
Ostend	Airport Code
Austria Fund, Inc.	Business
Onesteel Ltd	Business
On Site Training	Community
Official Sound Track	Community
Original Soundtrack The	Community
Operation Safer Travel	Community
Original Sound Track	Community
Out of School Time	Community
Oblate School of Theology	Community
Open System Technologies	Computing
Open Systems Technologies	Computing
Offline Storage Technology	Computing
Optimal Solutions Technologies	Computing
On Slot Technology	Computing
Optimal Solutions and Technologies	Computing
Open Source Technology	Computing
Optical Storage Technology	Computing
Object Storage Target	Computing
Open Space Technology	Computing
Open Standards Terminal	Computing
on Site Dedicated Training	Computing
Open Stack	Computing
Optical Switch Testbed	Computing
Offline Storage Table	File Type
Offline Storage Tables	File Type
Orchestral Sound Track	General
On Screen Text	General
Original Soundtrack This	General
Orthopedic Shoe Technician	General
Operations Support Technician	General
Origanal Sound Track	General
Opening Sound Track	General
Offline STorage and this	General
Original Soundtrack The Term	General
Original Street Techno	General
Objective Strategy Tactics	General
Outlet Status Table	General
Official Soundtrack The	General
Open Simple Token	General
Origins Space Telescope	General
Online Services Terms	General
Ohio State Test	General
Offering Specific Terms	General
Office of the Special Trustee	General
Office of the Secretary of Transportation	General
Office of the State Treasurer	General
Old Spanish Trail	Governmental
of the Secretary of Transportation	Governmental
Office of Secure Transportation	Governmental
Office Services Team	Governmental
Oh Smoke That	Internet
Osmotic Shock Therapy	Medical
Opioid Substitution Therapy	Medical
Operation Stress Test	Military and Defence
Observed Sectional Trial	Military and Defence
Ohio States Tests	Regional
Operations Support Team	Space Science
Orbiter Support Trolley	Space Science
Orcish Stone Thrower	Sports
On Shore Technology	Technology