Article continues below advertisementTom Cruise's upcoming return to the cockpit in Top Gun 3 has sparked fresh fears for his safety, with insiders warning OK! the adrenaline junkie actor's relentless commitment to high-risk stunts at age 63 could carry serious consequences.The aging Hollywood veteran is set to reprise his role as Pete "Maverick" Mitchell in the fighter pilot threequel, which Paramount Pictures confirmed is officially in development with a script underway.