The first act of the air show...

A Soviet-era military training jet crashed and burst into flames during an air show in Iowa on Saturday, killing the pilot in an accident that occurred near a busy interstate highway, authorities said.

Corporal Jacob Pries of the Davenport Police Department said the accident involving the L-39 jet, developed in the former Czechoslovakia in the late 1960s, occurred about 1:30 p.m. during the annual Quad-City Air Show.

The jet was flying in formation shortly before it crashed alongside the I-80 highway. It plowed into a field near the Eastern Iowa Industrial Center in northern Davenport, Fries said.