Assuming Ted Kennedy died in bed with no cameras present, this will grant him the dubious distinction of having been the only one of the four brothers not to have died on TV. We are all familiar with the horrific film of the assassination of JFK in Dallas, and of the footage from the hotel kitchen passageway when Robert Kennedy was shot in L.A.
What is perhaps less well known is that the eldest brother, Joe Kennedy, died with cameras turning in 1944. He was a US Navy pilot who had volunteered for a special mission after completing his normal tour of duty. The Germans were constructing an immense concrete fortress at Mimoyecques in France to house an array of the V3 superguns intended to annihilate London. It had proved impregnable to the biggest bombs available to the allies.
It was planned to crash a remote controlled Liberator bomber packed with explosives into the structure. The plane took off from East Anglia with Joe Kennedy as the pilot and a technician as the co pilot. Once at flying height, an accompanying plane took control by radio with other aircraft filming the proceedings. The technician co pilot switched on the camera in the nose of the Liberator which would relay pictures back to enable precise final targeting and Joe Kennedy and the co pilot prepared to bale out before the plane reached the coast. At that point, the plane detonated prematurely and both were atomised.
http://www.aviationmuseum.net/Joe_Kennedy.htm