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  2. United States Coast Guard - Wikipedia

    en.wikipedia.org/wiki/United_States_Coast_Guard

    The Coast Guard does not have medical officers or chaplains of its own. Instead, chaplains from the U.S. Navy, as well as officers from the U.S. Public Health Service Commissioned Corps are assigned to the Coast Guard to perform chaplain-related functions and medical-related functions, respectively. These officers wear Coast Guard uniforms but ...

  3. Underwater diving - Wikipedia

    en.wikipedia.org/wiki/Underwater_diving

    Medical fitness to dive is the medical and physical suitability of a diver to function safely in the underwater environment using underwater diving equipment and procedures. As a general principle, fitness to dive is dependent on the absence of conditions which would constitute an unacceptable risk for the diver, and for professional divers, to ...

  4. History of scuba diving - Wikipedia

    en.wikipedia.org/wiki/History_of_scuba_diving

    Scuba diver of the late 1960s. The history of scuba diving is closely linked with the history of the equipment.By the turn of the twentieth century, two basic architectures for underwater breathing apparatus had been pioneered; open-circuit surface supplied equipment where the diver's exhaled gas is vented directly into the water, and closed-circuit breathing apparatus where the diver's carbon ...

  5. Cuba - Wikipedia

    en.wikipedia.org/wiki/Cuba

    [129]: 37–38 The Cuban economy fell into decline after large sectors of the economy were neglected when large amounts of urban labor mobilized to the countryside. [129]: 38 The standard of living in the 1970s was "extremely spartan" and discontent was rife. [130] Fidel Castro admitted the failures of economic policies in a 1970 speech. [130]

  6. Texas City refinery explosion - Wikipedia

    en.wikipedia.org/wiki/Texas_City_Refinery_explosion

    Day-shift supervisor A, the more experienced of the two, left at 10:50 am due to a family emergency. Contrary to the operating rules, no supervisor was left in the central control room. A single, unsupervised, and very tired board operator was now left to supervise the ISOM and two other units during a critical start-up procedure. [45] [48] [49 ...