Rebel, suicide bomberrebel, suicide bomber, extremist, anybody who does extreme or unexpected things.
Example from The Godfather Part II movie:
A: "I saw an interesting thing happen today. A rebel was being arrested by the military police. Rather than be taken alive he exploded a grenade he had in his jacket. He killed himself and took a captain of the command with him."
B: "Those rebels are lunatics."
A person is obsessed with planning minuscule time frames between travel legs on a given mission. Comes from ‘lunar landing’: A mission that required precise, timely and high risk co-ordination of planning for success.
He wanted to get in on an 8am flight which left him 23 minutes to get the nexttrain, which was due to get in with 2 minutes to spare for presentation set up, what a lunatic!