An emotional scene unfolded late Thursday as the families of three Russian prisoners greeted the trio, who arrived in a small plane following a historic prisoner swap with Russia. President Joe Biden saluted Wall Street Journal reporter Evan Gershkovich, former U.S. Marine Paul Whelan and Radio Free Europe/Radio Liberty journalist Alsu Kurmasheva, as he walked up to the plane on the tarmac. He and Vice President Kamala Harris greeted Whelan first, who was servicing a years-long sentence in Russia. Whelan embraced the vice president before hugging his sister as cheers erupted on the platform. G…