Christian tested & perfected his device in Lake Erie.
With onset of #WWII one of his professors saw its potential for military use.
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This concept paved the way for the swimmer delivery vehicle used by the @USNavy ’s UDT & @us_navyseals years later.
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1945: #OSS disbanded.
1947: Christian helped @USNavy save UDT from demobilization.
UDT was precursor to @us_navyseals.
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1952: Christian wrote a paper for @theNASciences & coined the term "Self-Contained Underwater Breathing Apparatus"– #SCUBA.
#OSS75
Christian taught @Penn for more than 40 years & continued his work w government, including @NASA & @USNavy through the 2000s.
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Christian spent his final years on Maryland’s Eastern shore raising cattle, tending to bees & gardens.
He died in 2011 at age of 93.
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Dr. Lambertsen: Father of Frogmen, inventor, environmentalist, undersea & aerospace pioneer.
http://bit.ly/2sYDWJ4
#WorldOceansDay
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very good grasshoppah
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