Petrocom and Coastel are existing licensees in the GMSA whose CGSAs were defined, prior to the instant regulations, to encompass the western half of the Gulf of Mexico and the entire Gulf of Mexico, respectively. The boundary between the GMSA and land-based MSAs and RSAs is demarcated by the coastline. See Petroleum Communications, Inc., 1 FCC Red 511, 513 (1986) (Order on Reconsideration). Petitioners provide cellular telephone service primarily to oil industry employees working on drilling rigs and to boating traffic in the Gulf. Because FCC regulations do not permit licensees in the GMSA to build towers on land, petitioners must place transmission towers on the waterborne platforms of oil and gas companies. See Further Notice of Proposed Rulemaking, 6 FCC Red 6158, 6159 (1991) (<HOLDING>). When oil companies move these platforms,
holding that in action by property owner to recover land taken by eminent domain current titleholder to land might be necessary party if district court were to restore land to plaintiff recognizing inability of gulf carriers to locate antenna towers on land to serve gulf areas recognizing general proposition that if land is artificially submerged for the statutory period necessary to change ownership of the land title to the submerged land is passed to the state in trust for the public holding that land sales contracts were not securities because they involved no investment in an enterprise even if land was bought on expectation that development of the area would increase the value of the land holding that collateral consequences such as the loss of the license to practice medicine sex offender registration inability to vote or inability to serve on a jury do not constitute constructive custody