This video answers the question of the casualty radius of Mattis’ knife hand
General James "Mad Dog" Mattis is known for many things, including outstanding leadership, delivering motivational quotes and demonstrating perfectly executed knife hands.
Mattis entered in the Marine Corps in 1969 and attended Central Washington University as part of the ROTC program.
Working his way up the ranks, Mattis oversaw a Marine recruiting station in Portland, led the historic 1st Marine Division into Iraq in 2003, held the position of commander of the United States Central Command since 2010, and served under the Trump administration as the 26th Secretary of Defense until 2019.
Having served nearly his entire 41-year military journey in a position of leadership, he's had to answer all sorts of tough questions.