Somewhere on the steep, rock-strewn hills just ahead, the remains of a TA-4F Skyhawk lay undisturbed. At 3:07 p.m. on Oct. 23, 1969, the ill-fated jet on a training flight originating in Yuma, ...

The McDonnell Douglas TA-4J is a dedicated trainer version of the A-4F, meaning it comes with a downrated engine and no weapons systems ...