By Simina Mistreanu
Keith Humphrey, a businessman and Navy veteran, filed to run for state Senate in District 28 as a Democrat on Friday. Incumbent Republican Mike Petersen of Wichita is seeking re-election in the district. District 28 includes south Wichita, Oaklawn-Sunview and north Derby, according to maps released Thursday by the federal district court in Kansas City. Humphrey, who lives in Derby, is president and CEO of Jet AirWerks, a repair station for commercial jet engines, and Jet AirParts, a distributor for commercial jet engine components. Together, the companies employ 33 people. He served in the U.S. Navy for 10 years. Humphrey’s campaign said he filed by nominating petition with the signatures of 430 Democratic voters in the 28th Senate District. He is married and has six children.