Question: What was the specialization of an American naval officer who led the aircraft of the United States Antarctic Service to photograph Cox Point?

Passages:
Bear Island or Isla Teniente González is a rocky island lying 1 nmi west of Stonington Island in Marguerite Bay, off the coast of Graham Land.  Bear Island was presumably known to the British Graham Land Expedition (BGLE) (1934-1937) and the United States Antarctic Service (USAS) Expedition (1939-1941), both based in the Stonington Island area.  Bear Island was surveyed in 1947 by the Falkland Islands Dependencies Survey (FIDS), who named it for the USS Bear, flagship of the United States Antarctic Service (USAS) Expedition which visited this area in 1940. Rear Admiral Richard Evelyn Byrd Jr., USN (October 25, 1888 – March 11, 1957) was an American naval officer who specialized in feats of exploration.  He was a recipient of the Medal of Honor, the highest honor for valor given by the United States, and was a pioneering American aviator, polar explorer, and organizer of polar logistics.  Aircraft flights in which he served as a navigator and expedition leader crossed the Atlantic Ocean, a segment of the Arctic Ocean, and a segment of the Antarctic Plateau.  Byrd claimed that his expeditions had been the first to reach both the North Pole and the South Pole by air.  However, his claim to have reached the North Pole is disputed. Maury Glacier is a glacier 4 nmi wide, flowing in an east-northeast direction to the southwest corner of Violante Inlet, on the east coast of Palmer Land, Antarctica.  It was discovered and photographed from the air in December 1940 by members of the United States Antarctic Service.  During 1947 the glacier was photographed from the air by the Ronne Antarctic Research Expedition, who in conjunction with the Falkland Islands Dependencies Survey (FIDS) charted it from the ground.  It was named by the FIDS for Matthew F. Maury, an American naval officer and hydrographer who was a distinguished promoter of maritime research and Antarctic exploration. Lewis Bluff ( ) is a rock bluff located at the confluence of Paschal Glacier and White Glacier, 7 nmi southeast of Mount McCoy, in coastal Marie Byrd Land.  The bluff was photographed from aircraft of the United States Antarctic Service, 1939–41, and was mapped in detail by the United States Geological Survey, 1959–65.  It was named by the Advisory Committee on Antarctic Names for David L. Lewis, a United States Antarctic Research Program ionospheric physicist at Byrd Station, 1963. The Erb Range ( ) is a rugged mountain range rising to 2240 m between Kosco Glacier and Shackleton Glacier in the Queen Maud Mountains, and extending north from Anderson Heights to Mount Speed on the west side of the Ross Ice Shelf.  The range was photographed from aircraft of the United States Antarctic Service Expedition, 1939–41, and surveyed by A.P. Crary, leader of the U.S. Ross Ice Shelf Traverse, 1957–58.  Named by the Advisory Committee on Antarctic Names in 2008 after Karl A. Erb who played a major role in guiding the United States Antarctic Program as both the NSF Senior Science Advisor in the mid 1990s and subsequently as Director of the Office of Polar Programs from 1998 until 2007 and beyond.  During his tenure as the Senior Science Advisor, he helped to guide NSF through the process of justifying and then securing Congressional funding for the redevelopment of the South Pole Station. Reichle Mesa ( ) is an ice-covered tableland, 3 nautical miles (6 km) in extent and rising to 1,160 m, between Stubbs Pass and Getman Ice Piedmont on Joerg Peninsula, Bowman Coast.  The feature was photographed from the air by the United States Antarctic Service (USAS), 1940, Ronne Antarctic Research Expedition (RARE), 1947, and U.S. Navy, 1966, and was surveyed by Falkland Islands Dependencies Survey (FIDS), 1946-48.  Named by Advisory Committee on Antarctic Names (US-ACAN) in 1977 after Richard A. Reichle, United States Antarctic Research Program (USARP) biologist, specialist on Antarctic seals in six austral summers, 1970–77, the last two summers in RV Islands. The Coor Crags ( ) are several rock crags standing 3.5 nmi southeast of Cox Point in the northern part of the Erickson Bluffs, near the coast of Marie Byrd Land.  The feature was first observed and photographed from aircraft of the United States Antarctic Service, 1939–41, and mapped by the United States Geological Survey from surveys and from U.S. Navy air photos, 1959–65.  The crags were named by the Advisory Committee on Antarctic Names for Lieutenant Commander Lawrence W. Coor, U.S. Navy, pilot of LC-130 Hercules aircraft during Operation Deep Freeze 1970 and 1971. Cox Point ( ) is a rock headland at the southwest side of the terminus of Garfield Glacier where the latter discharges into Hull Bay, on the coast of Marie Byrd Land.  The point was first observed and photographed from aircraft of the United States Antarctic Service, 1939–41, led by Admiral Richard E. Byrd.  It was named by the Advisory Committee on Antarctic Names for E.F. Cox, a carpenter of the Byrd Antarctic Expedition, 1933–35. The United States Antarctic Program (or USAP; formerly known as the United States Antarctic Research Program or USARP and the United States Antarctic Service or USAS) is an organization of the United States government which has presence in the continent of Antarctica.  Founded in 1959, the USAP manages all U.S. scientific research and related logistics in Antarctica as well as aboard ships in the Southern Ocean. Wells Saddle ( ) is a broad snow-filled saddle between Mount Berlin and Mount Moulton in the Flood Range of Marie Byrd Land.  The saddle was photographed from aircraft of the United States Antarctic Service (USAS) in December 1940.  It was mapped by United States Geological Survey (USGS) from ground surveys and U.S. Navy air photos, 1959-66.  Named by Advisory Committee on Antarctic Names (US-ACAN) for James H. Wells, a member of the United States Antarctic Research Program (USARP) team that studied ice sheet dynamics in the area northeast of Byrd Station, 1971-72.

Supporting sentences:
Cox Point ( ) is a rock headland at the southwest side of the terminus of Garfield Glacier where the latter discharges into Hull Bay, on the coast of Marie Byrd Land.  The point was first observed and photographed from aircraft of the United States Antarctic Service, 1939–41, led by Admiral Richard E. Byrd. Rear Admiral Richard Evelyn Byrd Jr., USN (October 25, 1888 – March 11, 1957) was an American naval officer who specialized in feats of exploration.