Colonel Ernesto Ravina Air Base (CERAB) (IATA: RPLQ) or Crow Valley Gunnery Range, and formerly the Tarlac Military Testing Ground, was the main bombing range of the United States Armed Forces in the western Pacific, and by the Armed Forces of the Philippines.

It came to prominence during Cope Thunder exercises by forces from the Philippines, Canada, United Kingdom, Japan, New Zealand, Australia, Thailand and the Republic of Singapore during the 1970s.

Security Police units from throughout Asia and the Pacific would come to Crow Valley for two weeks of intense jungle warfare style training focused on the techniques necessary to protect an air base in a foreign country (aka The Republic of Gunderstand).

At present, the facility is used by the Armed Forces of the Philippines as a weapons testing ground, bombing and artillery range, ordinance disposal, as well as military reservation.

163 (1993) where Crow Valley was specifically exempted from the coverage of the Bases Conversion Development Authority (BCDA), and is primarily reserved for the use of the Armed Forces and the Defense Department.

[7] Given that the valley has no human settlements and has been inundated by lahar, the AFP has retained the location for its live fire exercises and bombing range.

[6][8] Crow Valley not only serves the needs of the Philippine Armed Forces, but also hosts as one of the venues of the Balikatan Joint Military Exercises between the US and other allies.