In military drill, the command of "trail arms" means that a rifle, which has been at "order arms" (butt on the ground beside the right foot, barrel gripped by right hand) is lifted vertically a few inches, and carried vertically in the one hand. This is used when moving a group of troops a few feet- as opposed to using "port arms" (rifle carried diagonally across the chest with both hands)
Unknown term; out of what context?
No. Cannot carry, touch, shoot, or have access to firearms.
The most common method for murder is the use of firearms.
No. Most correctional officers do not carry firearms.
Each branch of the military and each branch of many federal agencies carry firearms and train with firearms. The IRS has agents that carry firearms. Probably the largest users would be the Marines and Army.
The same authority that enables them to carry firearms.
to beat people up
because they like to teach