“Rifle” is the brevity code-word used when a US warplane fires a Maverick missile. That announcement lets other planes and troops on the ground know there’s a missile zipping around.
The vid below shows just how close some close air support can be. This shot is what would be called “danger close” meaning fragments could very well reach our guys. Still, there’s nothing like having big freakin’ missiles drop on the heads of the bad guys pinging away at you to bring a little peace to the neighborhood.
H/T to Primordial Slack