Occasionally in Metal Gear Solid V: The Phantom Pain, right before a key cinematic relating to Mother Base appears, a character (either Miller or Ocelot) will give a brief call to the player giving a rough explanation for what's going on that is important enough to require the player (as Venom Snake)'s presence before the player is automatically brought back to Mother Base for the cutscene (as implied by the chopper sound effect upon the call's end).