93 year old Mikhail Kalashnikov is in the hospital for undisclosed reasons. Sources even have him listed as in intensive care. This man has touched lives all over the globe. I won’t give away what he is known for, only to show you a sliver of his famed invention. (Of course, his name is a dead giveaway.) His groundbreaking tech, the Avtomat Kalashnikova:

I’ve never done an easier guess-this challenge. 100 push-ups if you are still in the dark.