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Jefferson Grau preparing holes in sphere for electrical penetrator installation.
Jefferson Grau prepares viewport window mounting ring for alignment.
Japanese astronaut Akihiko Hoshide (dark jacket) visits the Alvin overhaul crew.
HOV Alvin lands on the seafloor in the Gulf of Mexico during dive AL4681.
Jefferson Grau tutors Diane Adams and Jennifer Glass (green skirt) about HOV Alvin.
Jefferson Grau inspects viewport window for inconsistencies.
Jefferson Grau peering out from an Alvin viewport window.
Swimmers tending to Alvin at surface for recovery operations.
Swimmers tending to Alvin at surface for recovery operations.
Swimmers tending to Alvin at surface for recovery operations.
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