Danger flies high today with three old time radio mysteres involving airplanes. First, Frank Race is hired to deliver the plans for a million-dollar aircraft in the syndicated story "The Airborne Adventure." Next, Philip Marlowe's latest case leads to a team of daredevil skydivers and a deadly accident in "The Birds on the Wing" (originally aired on CBS on November 26, 1949). And finally, Douglas Fairbanks, Jr. stars as a government agent hunting for the person who stowed a time bomb aboard a plane in "The Big Kill" from The Silent Men (originally aired on NBC on February 3, 1952).