Skipper: Docs show no coverup in Cold War submarine sinking

Skipper: Docs show no coverup in Cold War submarine sinking
In this July 9, 1960 file photo the 278-foot (82 meters) long nuclear-powered attack submarine USS Thresher, a first in its class boat, is launched bow-first at the Portsmouth Navy Yard in Kittery, Maine. Photo credit AP Photo/File

The release of about 3,000 pages of documents delving into the deadliest submarine disaster in U.S. history has not yielded any sinister effort to hide the truth, a retired Navy skipper