Re: Emergency ....Medical? Hologram???
Also, if there was a security emergency too serious for the reuglar security force to handle, it would be far more practical to give any available officer and crewman a phaser and have them help fighting the enemy. After all, combat training is presumably part of Starfleet basic.
"Internet message boards aren't as funny today as they were ten years ago. I've stopped reading new posts." -The Simpsons 20th anniversary special.