Miniature Aircraft Radio Kontrol Society (MARKS)

MARKS (AMA #133) is a radio control flying club for the San Bernardino, Redlands and Highland area, and one of the oldest clubs in the Inland Empire. Its home is the Greenspot Flying Field, on a retention basin by the Santa Ana Wash just east of Highland. The field has a 500-foot polymer-surfaced runway, a long shade structure, setup tables and a portable toilet, and jets are allowed. Because Redlands Airport is close by, the club keeps a 400-foot ceiling and pilots monitor the airport frequency. New pilots can get free flight lessons from club instructors.