Doing her part to boost morale, Jessica Simpson paid a visit to the USS Harry S. Truman for a very special performance. The “Come On Over” songstress flew into the Persian Gulf region where she chatted with sailors and gave a concert for the men and women faithfully serving their country. Jess tweeted, "Feel so humbled by the sacrifice the troops and their families make to keep us safe. I'm forever changed after this last week. Thank you!" And contrary to the US Weekly report that Simpson vomited during her performance, Gossip Cop reports that Jessica did get sick, but it was before she s...