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.
The Gulf of Tonkin incident is the name given to two separate confrontations involving North Vietnam and the United States in the waters of the Gulf of Tonkin. Prior to the two incidents the U.S. had provided substantial aid to South Vietnam and also had a number of military advisers in South Vietnam.