relocated. The "zipper" is actually a misnomer in that the A7L entry was through two zippers sewn over each other. The inner zipper had rubber teeth and provided sealing. The outer (externally visible) zipper was a conventional metal toothed slider for mechanical restraint. The A7LB had two pairs of such zipper sets that intersected on the right side of the suit above the waist joint. Opening the suit required undoing a clasp that held the zipper sets together. In addition, the EVA backpacks were modified to carry more oxygen, lithium hydroxide (LiOH), more power, and cooling water for the longer EVAs. While NASA wished these revisions to be accomplished without a volume increase, that was not possible. NASA allowed a minor protrusion on one side for an auxiliary water tank resulting in the last configuration of backpack. To maximize the return of lunar samples, the main module of both the Apollo 11,12,14 and 15-17 backpacks were left on the Moon. To facilitate these longer EVAs, small energy bars were carried in special pouches beneath the interior of the suit helmet ring, and the astronauts wore collar-like drinking water bags beneath the outer suit. Because the Vietnam War had taken toll on the federal budget, NASA's budget was in decline. The Command Module Pilot did not get a new mid-entry suit. NASA elected to modify existing A7L EV units by simply removing the liquid cooling features to create a "new" A7LB CMP suit. Once the existing inventory was consumed, a few new A7LB CMP suits were made to support Apollo 17. Because the J-series CSMs incorporated the Scientific Instrument Module (SIM) Bay, which used special film cameras similar to those used on Air Force spy satellites, and required a "deep space" EVA for retrieval, the CMP for each of the three J-series missions wore a five-connector A7LB-based H-series A7L suits, with the liquid cooling connections eliminated as the CMP would be attached to a life-support umbilical (like that used on Gemini EVAs) and only an "oxygen purge system" (OPS) would be used for emergency backup in the case of the failure of the umbilical. The CMP wore the commander's red-striped EVA visor assembly, while the LMP, who performed a "stand-up EVA" (to prevent the umbilical from getting "fouled up" and to store the film into the CSM) in the spacecraft hatch and connected to his normal life-support connections, wore the plain