The Miami Heat have been dropping behind the scenes videos on their Instagram page today, beginning with a look at LeBron James going insane in an industrial dungeon while working out. We also received a preview of alternate jerseys the Heat will be rocking this year. Most notable is the new red on red alternate jerseys. Miami has used red jerseys before, but with white lettering. These new red uniforms have red lettering, with only a hint of white outline.