Hopefully Delta is giving them some frequent flier miles after this. The Centers for Disease Control and Prevention is trying to contact passengers from a Delta flight after they discovered a bat had stowed away onboard. The Atlanta-bound flight returned to Madison when a bat started flying around the cabin. Passengers were eventually able to trap it in the plane's bathroom, but it got away before authorities could test if it was rabid. The CDC has been able to reach 14 of the 50 passengers.