Article Photos: Iranian scientist returns after release from US 1/3

Iranian scientist, Mojtaba Atarodi, center right, who was in U.S.  custody since late 2011 over allegations he bought high-tech equipment in violation of U.S. sanctions on Iran, is welcomed by his family, upon his arrival at the Imam Khomeini airport outside Tehran, Iran, Saturday, April 27, 2013. Atarodi arrived home via Oman, a Gulf state which has served as a mediator between Washington and Tehran before. (AP Photo/Vahid Salemi)