Blackhawk really stuggled to adjust to the 1960s.

There was a heavy flirtation with sci-fi in the early part of the decade, uniform changes - leading to 'lost' Blackhawk tales being printed with the old uniforms when that presumably didn't work!

The last ditch was to try this 'superhero' thing. 18 months later the title was cancelled.

Its real time to go was probably 1963 or so, to be honest. Those last few years aren't covered in glory.