A former Qwest Communications International executive, appealing a conviction for insider trading, has alleged that the government withdrew opportunities for contracts worth hundreds of millions of dollars after Qwest refused to participate in an unidentified National Security Agency program that the company thought might be illegal. Former chief executive Joseph P. Nacchio, convicted in April of 19 counts of insider trading, said the NSA approached Qwest more than six months before the Sept. 11, 2001, attacks, according to court documents unsealed in Denver this week. Details about the alleged NSA program have been redacted. … The newly released court documents say that, on Feb. 27, 2001, Nacchio and James Payne, then Qwest's senior vice president of government systems, met with NSA officials at Fort Meade, expecting to discuss "Groundbreaker," a project to outsource the NSA's non-mission-critical systems.