Yeah, I like to have control of everything that's going on in the game. So, I usually give my teammates at least a general callout.
The bare minimum sounding something like, "We've got HungryLeopard72 in the crouch animation near A flag's mid-map-facing cave entry. The 18th pixel on his knee is on the 16th pebble's lower quadrant 3rd pixel where the heavy ammo respawns. He is absolute, wielding a Hand Cannon dealing 56 damage. We have confirmed one bullet in the chamber, and he is approximately 2.66 -[i]repeating of cours[/i]e- percent into the reload animation. Engage immediately."