1) PI political unit 2) Cacodemon 3) Certain frat 4) Choir voice 5) End for Tom turns him red 6) First national fraternity 7) First volume heading starter 8) From-Z center 9) Luzon group 10) Start of a volume 1 label 11) Volume 1 heading starter 12) Volume 1 starter 13) Volume One words 14) When rockets blast off Found on https://www.crosswordclues.com/clue/ato
Air Tasking Order (Frag)-Assigns air-to-air and air-to-surface targets, TOTS, and mission support information. Found on http://www.f-16.net/glossary-A.html
Automatic Train Operation, where the train speed is controlled by a combination of commands transmitted from the track or trackside and the operator (formerly the driver) only has to start the train and operate the doors. Used on the Victoria Line throughout and on the Central Line except part of the Ealing branch. For more on Victoria Line ATO,... Found on http://www.trainweb.org/tubeprune/dictionary.htm