Okay then, You're talking about 2 different things here..

Attack Pattern Alpha: which is a Player Character Tactical Lt ability...
http://www.stowiki.org/Ability:_Attack_Pattern_Alpha

Attack Pattern Beta, Delta & Omega, which are Tactical BO Skills
http://www.stowiki.org/Ability:_Attack_Pattern_Beta
http://www.stowiki.org/Ability:_Attack_Pattern_Delta
http://www.stowiki.org/Ability:_Attack_Pattern_Omega


STOWiki is your friend...