Conclusion of Angel's origin
The Flying A-Bomb! from Uncanny X-Men #56
Continued from last issue...

Cyclops and Iceman's attempt to recruit the Avenging Angel into the X-Men
has hit a snag when the egotistical loner suddenly attacks them in his apartment.

As the two young mutants try to stop the fight, the Professor monitors the situation with his mental powers.
Although the two X-Men have ranged mutant abilities, they are no match for Warren's fighting skill.
Attempting to seek an end to the fight, the Professor telepathically
contacts Warren and explains the situation, calming the young mutant down.

However, the Professor also detects another danger, the cylinder of a new
radioactive isotope that the Avenging Angel has relinquished from some thieves.
Somehow the isotope has become active while being in contact with the
Avenging Angel's mutant biology and is about to explode at any moment.
Realizing that only extreme cold will stop it, Warren suddenly flies up high into the sky to prevent a potential explosion from harming anyone.

In the freezing cold of the upper atmosphere, Warren breaks open the cylinder and the radioactive material is rendered harmless by the cold.
The Avenging Angel blacks out from the cold and lack of oxygen, however revives just in time to pull out of his free fall.

Returning to the X-Men, he agrees to meet with the Professor and join their ranks as the Angel.

Script by Roy Thomas, pencils by Werner Roth, inks by Sam Grainger