Photo By BRENDAN SMIALOWSKI/AFP/Getty Images

US President Barack Obama and First Lady Michelle Obama arrive for a memorial service at Fort Hood April 9, 2014 in Texas. US President Barack Obama attended a memorial service for the three people killed and 16 wounded during last weeks shooting at the post by Army Specialist Ivan Lopez who later took his own life. AFP PHOTO/Brendan SMIALOWSKIBRENDAN SMIALOWSKI/AFP/Getty Images