A Training Drone is a mechanoid found in the Wii video game Metroid Prime 3: Corruption. It is used by the Galactic Federation for hand eye coordination. In the game, Galactic Federation marines must shoot all of the Training Drones as fast as possible. This can also be done by the game's protagonist Samus Aran in the beginning of the adventure, and is basically considered a training exercise for the player in control.
Apparently troops in the Galactic Federation have shooting contests using the Training Drones and gamble with them. This is, according to the scan, frowned upon. In the game the player can only find Training Drones on the GFS Olympus.