JO
John O'Callahah
U.S. Navy Veteran
USS Koontz DDG 40
John O'Callahah is a veteran U.S. Navy SM4 who served from 1975 to 1982. During their time in service, served with USS Koontz DDG 40
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Get StartedAbout John O'Callahah...
John O'Callahah is a veteran U.S. Navy SM4 who served from 1975 to 1982. During their time in service, served with USS Koontz DDG 40
Branch
U.S. Navy
Rank
SM4
Service Years
1975 - 1982
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