The Summer 2003 United States Inside Football League had teams called the Island Warriors, California Predators, The Hit, Green Valley Dragons, and Las Vegas Express. The Island Warriors site is at
www.eteamz.com/islandwarriors. The Las Vegas Express site is at
www.eteamz.com/lvexpress. The season was only four games played from May 17 to June 14 with a championship on June 28, 2003. The USIFL's web site was
www.usifl.com, but it is no longer active.
As for the Nebraska Indoor Football League, I have tried to contact them on several occasions and never received responses to my e-mail messages. I had heard the league folded, but have not been able to confirm. The league's web site
www.nifl.org is no longer active. The league's teams usually went by just their nicknames on the NIFL web site, but when the teams played games outside the league, a city was added to their nicknames. I believe the Chillers and Redemption were NIFL members last season.