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Retired Air Force Captain Ray Brennan was a tall, active 61-year-old who enjoyed collecting

seashells. Despite a recent history of heart problems, he set off from his home in Clearfield, Pennsylvania to attend a convention in

Philadelphia. When Ray returned home he felt a bit more tired than usual.

Three days later he complained of chest pain. That night his lungs began to fill with fluid.

Then he suddenly died from an apparent heart attack. Later that week and 150 miles

away Frank of any age 60 died in much the same way. Within days, nine more men,

ages 39 to 82, and scattered all over the state, died under the same mysterious circumstances.

Headaches, chest pain, high fever, lung congestion, and finally death from an apparent heart

attack.

All the victims were men, all were veterans, and all all from Pennsylvania.

Health officials suspected the worst.

An invisible, mass killer had been unleashed upon the state, possibly the entire country.

Soon, experts identified a connection between the victims.

All were associated with the same convention that Ray Brennan had attended.

It was the 1976, American. same convention at the

at the bellview stratford hotel in Philadelphia

the first outbreak of what we now call Legionnaires disease.

Experts finally trace the illness to a previously unknown pathogen that spread through

the hotel's air conditioning system.

...