File:Al Shepard and Ed Mitchell During geological training.jpg

English: Al Shepard (left) holds the scoop high enough that Ed Mitchell can take the sample without bending, something he would not be able to do easily in the pressure suit on the Moon. Note that Al is wearing a stereocamera that was under development but was never flown. Journal Contributor Markus Mehring tells us that the red dot at the top left on the back of the 16-mm camera in the right foreground is "the end of film warning light, which lights up when there are less than 6 feet of film left in the magazine." The 16-mm camera was manufactured by Mauer and their label is at the bottom left on the back of the camera. A bettery pack (DAC Power Pack) is attached to the righthand side of the camera. Mehring notes, "The white cable below is the connector cable providing the DAC with power from the batteries. The DAC didn't have internal batteries, it always drew its power via a cable from the spacecraft circuits. And during mobile EVA usage, they of course didn't have that available, so they came up with this battery solution."