Concorde, the first and only supersonic commercial jetliner, operated from 1976 to 2003. Flown by royals, celebrities, and executives, it was discontinued because of high operating costs.

On December 27, a small squadron of Keystone B3 and B4 biplanes flew over the torrents of lava threatening Hilo and dropped 20 bombs onto it, totaling 3.6 tons of TNT. For all that furious ...