A food truck based in Kingsport scheduled through July has had to cancel its events now that aAuthorities are searching for the missing food trailer after owners say it disappeared from a parking lot Thursday afternoon.According to a post from Curbside Kitchen Inc., the mobile eatery based in Kingsport, the trailer went missing sometime between 12-4 p.m. Thursday. It was parked in the 4000 block of Fort Henry Drive and was locked at the time.The trailer itself, a black Homesteader trailer plated in Tennessee (034054T), and was loaded with food at the time for an event later that day.