Around 2/3 of women experience shortness of breath as a part of a normal pregnancy. Neurological conditions such as spinal cord injury, phrenic nerve injuries, Guillain-Barre syndrome, amyotrophic lateral sclerosis, multiple sclerosis and muscular dystrophy can all cause an individual to experience shortness of breath.
On August 2, 1964, the U.S. destroyer Maddox exchanged shots with North Vietnamese torpedo boats in the Gulf of Tonkin. Two days later, the Maddox and another destroyer reported once again coming under fire.
In August 1964 Congress passed the Tonkin Gulf Resolution (78 Stat. 384), approving and supporting President Lyndon B. Johnson's determination to repel any armed attack against U.S. forces in Southeast Asia. Johnson subsequently relied on the measure as his chief authorization for the escalation of the Vietnam War.