In this 1998 photo, Leo Mascheroni and his wife Marjorie pose in their Los Alamos, N.M. home. A scientist and his wife who both once worked at Los Alamos National Laboratory were arrested Friday, Sept. 17, 2010 after an FBI sting operation and charged with conspiring to help develop a nuclear weapon for Venezuela. (AP Photo/The Santa Fe New Mexican, Clyde Mueller)

Photo by: Clyde Mueller

In this 1998 photo, Leo Mascheroni and his wife Marjorie pose in their Los Alamos, N.M. home. A scientist and his wife who both once worked at Los Alamos National Laboratory were arrested Friday, Sept. 17, 2010 after an FBI sting operation and charged with conspiring to help develop a nuclear weapon for Venezuela. (AP Photo/The Santa Fe New Mexican, Clyde Mueller)