BOSTON (AP) -- For the first time in court, Boston Marathon bomber Dzhokhar Tsarnaev dropped his blank, impassive demeanor and cried as his sobbing aunt briefly took the stand Monday in his federal death penalty trial. Tsarnaev, 21, wiped tears from his eyes quickly and fidgeted in his chair as his mother's sister sobbed uncontrollably. He had maintained a disinterested expression since his trial began in January. The aunt, Patimat Suleimanova, cried as she sat down about 10 feet from Tsarnaev. The tears began falling before she began to testify, and she was only able to answer questions about her...