English: The two moon-exploring crewmen of the Apollo 14 lunar landing mission show off some of the largest of the lunar rocks they collected on their mission, during a through-the-glass meeting with newsmen in the Crew Reception Area of the Lunar Receiving Laboratory (LRL) at the Manned Spacecraft Center (MSC). Astronaut Edgar D. Mitchell (left), lunar module pilot, holds up a tote bag in which some of the lunar samples were stowed, while astronaut Alan B. Shepard Jr., commander, looks on. The largest sample brought back on the mission, a basketball-size rock (nicknamed "Big Bertha"), is said to be the largest lunar rock collected in three lunar landing missions for the National Aeronautics and Space Administration (NASA).