Berkut will never enter service. It is test plane for new technologies.
F/A-22A Raptor is in the service:
ACC
-422nd TS(OT) Nellis AFB, NV F/A-22A
-325th FW (TY):
*43rd FS Hornets Tyndall AFB, FL F/A-22A (25)
-1st FW (FF):
*27th FS Eagles Langley AFB, VA F/A-22A (24)
*<71st FS Langley AFB, VA F/A-22A (24)>
*<94th FS Langley AFB, VA F/A-22A (24)>
And: AFMC
412th Test Wing 411th FLTS Edwards AFB, CA F/A-22 CTF