Emergency Tactical Hologram
The Emergency Tactical Hologram (ETH) was a sophisticated hologram that was designed for use as an emergency tactical officer. 

During the late 24th century, ETH programs, as well as variations on the "emergency" theme, were all incorporated into the customizable Emergency Hologram basic installation. Such packages were available on board Kaplan F17 Speed Freighters. ()

Individuals 
 Emmet

Holographic programs
Engineering tools