Forjado a fuego

In a special military themed episode, four bladesmiths, all veterans of the U.S. Armed Forces, dive into the fray when they are tasked with forging a combat knife from an anti-tank hedgehog. After two grueling rounds of competition filled with frustration and a medical emergency, the final two smiths advance and head back to their home forges to recreate another military favorite, the M1917 Naval Cutlass. Which veteran has the mettle to drive to glory and earn the rank of Forged in Fire Champion?