Portable oxygen concentrators. Generally, the Federal Aviation Administration (FAA) prohibits the use of personal oxygen units during flights because they contain compressed gas or liquid oxygen that is defined as hazardous material. However, the FAA has issued guidelines permitting the onboard use of certain portable oxygen concentrators (POCs). POCs approved by the FAA may be carried and used on board United flights worldwide at no charge, in accordance with FAA regulations.
Ronald Reagan (1911-2004), a former actor and California governor, served as the 40th U.S. president from 1981 to 1989. Raised in small-town Illinois, he became a Hollywood actor in his 20s and later served as the Republican governor of California from 1967 to 1975.
President Ronald Reagan. President Reagan served from January 20, 1981 to January 20, 1989. His impact is hard to cover in a concise way, but his policies linger both in the current U.S. economic framework and in the minds of millions.eorge H. W. Bush served from January 20, 1989, to January 20, 1993. While the Reagan Administration was characterized by robust economic growth, it left America saddled with a $220 billion deficit, three times the size it was when President Reagan took office.