What in the EFF? Are you serious, man? Gamma radiation is the most energetic, and deadly, ionizing radiation there is. It takes at least several feet of concrete to stop it, depending on the distance of where it's being emitted from and blows right through the human body, obliterating cells and causing immense damage to all bodily cells as it does.
Here is an example of what a short burst of gamma will do to the human body:Here is an example of what a short burst of gamma will do to a human
The blue flash of light seen when things went critical for a fraction of a second was caused by gamma rays ionizing the air. Immense amounts of energy.
I’m glad you picked that up. Gamma ray bursts occur during black hole events. If such a burst happened pointed at Earth anywhere within our galaxy (100,000 lt/yr) it would rip the ozone layer off and cause a major extinction. You don’t mess with gamma radiation.