B-52 bomber crashes shortly after takeoff at California's Edwards Air Force Base

Tragic. Most of the crew onboard were almost certainly aerospace engineers tasked with collecting sensor data.

    There were no large pieces of debris readily visible in the footage.

ref: https://www.reuters.com/business/aerospace-defense/us-air-fo...

    An Air Force B-52 Stratofress carrying eight people
    on a routine test mission crashed today shortly after
    take-off at 11:20 a.m. (PDT). Initial indications are
    that the crash was not survivable. Emergency response
    personnel are on scene, and officials are working to
    account for all personnel.

ref:https://pbs.twimg.com/media/HK40xIqacAAMa3n.jpg

Edwards: https://xcancel.com/EdwardsAFB