Stroke: a stroke occurs when there is a blocked (embolism) or ruptured (aneurysm/hemorrhage) blood vessel that supplies the brain, leading to severe and permanent damage to the tissues of the brain. A very severe stroke can cause brain death.
MCT: Marine Combat Training. All non-infantry Marines, upon completion of recruit training, will undergo Marine Combat Training (MCT). MCT consists of 29 days of battle skills training that enables Marines, regardless of MOS, to operate in a combat environment.
In the Marine Corps, it has the somewhat softer title of recruit training. Nevertheless, Marine recruit training is the longest in duration, lasting 12 weeks. Boot camp in the Navy and Air Force is almost a month shorter. Army basic training lasts about 10 weeks.