Marines with Marine Medium Tiltrotor Squadron (VMM) 165 attach buckets to an MV-22B Osprey to perform dumps during a firefighting exercise supporting the California Department of Forestry and Fire Protection aboard Hemet-Ryan Air Attack Base, Calif., Feb. 11. The Marines with VMM-165 flew out to the Diamond Valley Lake on Hemet-Ryan Air Attack Base with an MV-22B Osprey to perform bucket dips in an effort to prove the aircraft was capable of such training while supporting Cal Fire. - Marines with Marine Medium Tiltrotor Squadron (VMM) 165 attach buckets to an MV-22B Osprey to perform dumps during a firefighting exercise supporting the California Department of Forestry and Fire Protection aboard Hemet-Ryan Air Attack Base, Calif., Feb. 11. The Marines with VMM-165 flew out to the Diamond Valley Lake on Hemet-Ryan Air Attack Base with an MV-22B Osprey to perform bucket dips in an effort to prove the aircraft was capable of such training while supporting Cal Fire.