The crash is under investigation and LaGuardia is temporarily closed Photos and witness accounts from LaGuardia Airport provide more detail about a high-speed, head-on collision between an Air Canada passenger jet this weekend and a firetruck that was crossing the runway.

As time has gone on, innovations in fighter jet technology have made “bubble cockpits” steadily more useful to pilots—and more expensive to maintain. To an untrained eye, the canopy of a fighter jet looks like a simple bubble. In truth, it is a high ...