Machismo is in the eye of the beholder. Different groups and lifestyles tend to create their own versions. Country records celebrate macho truckin', stock car racin', and honkey tonkin', as well as complex relationships with law enforcement. My military friends' version has to do with ignoring pain from injuries; ignoring separation anxiety; and otherwise maintaining a laser focus on the job without benefit of food or rest. Extra points are available for shooting a clean, tight group with firearms that would jolt the fillings out of my teeth if I pulled the trigger once.
From 'Second Opinion'