Most radar units have a capability of temporarily locking the speed on the display. It's up to the officers and their local protocol to decide what they do, but I've never heard of it being a legal requirement.
Of every one hundred men, ten should not even be here. Eighty are nothing but targets. Nine are real fighters, and we are lucky to have them, for they make the battle. Ah, but the One... One of them is a Warrior... He will bring the others back.
"Wrong door, buddy!"
Let no man's ghost say my training failed him.