The Tri-Cities Fever signed AJ Harmon (6-foot-6, 325 pounds, OL), Jordan Davis (6-3, 305, OL), Lesley Deamer III (6-3, 310, DT) and Cory Henry (6-3, 256, DE) to bolster the offensive and defensive lines.
Harmon, who played at Georgia, was in camp with the Seattle Seahawks until his recent release.
Davis was a four-year starter at East Carolina University.
Deamer III, who played at Northwestern State University, was recently released by the New Orleans Saints.
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Henry is the all-time sacks leader at Florida Atlantic University. He signed as a free agent with the Houston Texans and has since spent time in camp with other NFL teams.