BANGKOK — A Myanmar military fighter jet crashed in a combat zone in the country’s east, according to an anti-military resistance organization that claimed to have shot it down. State-run media reported about the disappearance of an aircraft. Maui, the vice commander-in-chief and Secretary No. 2 of the Karenni Nationalities Defence Force, or KNDF, told The Associated Press on Thursday that a jet had been shot down early Wednesday by the resistance fighters during heavy fighting near Hpasawng