I don't know what most agencies are carrying, but I found this about the NYS Police:
(Albany, NY – November 9, 2006) - New York State Police Superintendent Wayne E. Bennett announced today the purchase of 5,400 Glock pistols. The Glock model 37, a .45 G.A.P.* caliber, was chosen after careful consideration and recommendation and will be used to upgrade the current issue Glock model 17, 9mm pistol.
(Albany, NY – November 9, 2006) - New York State Police Superintendent Wayne E. Bennett announced today the purchase of 5,400 Glock pistols. The Glock model 37, a .45 G.A.P.* caliber, was chosen after careful consideration and recommendation and will be used to upgrade the current issue Glock model 17, 9mm pistol.