Urban Areas Security Initiative (UASI) Drill reported in the 2400 block of South 22nd Avenue in Phoenix, Arizona.
Units responding, staged or on scene include: E141 SQ29 SQ159 SQ206 SQ278 HM141 HM305 HM608 HM705.
[Update] 150 public safety personnel participated the terrorist disaster drill, according to a Phoenix Fire Department tweet.