Explanation: In the fan lore of the sci-fi franchise Warhammer 40,000, the Blood Ravens of the Space Marines are renowned for their… uncanny ability to ‘acquire’ things from places that maybe they shouldn’t.

… a similar reputation is held by troops with the rank of Specialist in the US military, who are colloquially known as the ‘E4 Mafia’ for their astounding ability to acquire needed things and/or stall undesired projects without necessarily, provably violating any regulations (in front of anyone who cares).