World's First Delta-Jet Bomber-New Picture -- This is a new picture of the world's first four-jet operational delta bomber, the Avro 698. The Delta shape enables the aircraft to fly faster, higher and and farther with a bigger load and with greater economy than anything else in the world. The 698 made its first flight on August 30 and flew many times for thrilled crowds during the week-long Farnborough air display. But so secret is the aircraft that the Ministry of Supply did not allow it to la