Numerous incidents in Aaron Alexis ' past show that he was troubled , prone to violence . Navy shooting out the tires of car in Seattle in 2004 is the second in a string of instances . 2010 brings another arrest after Alexis fires a bullet through the ceiling of an apartment . 2010 , 2004 after his Navy discharge , he tells police he heard voices in eight hotels .
Numerous incidents in Aaron Alexis ' past show that he was troubled , prone to violence . Alexis shooting out the tires of car in Seattle in 2004 is the first in a string of instances . 2010 brings another arrest after Alexis fires a bullet through the ceiling of an apartment . Last month , two years after his Navy discharge , he tells police he heard voices in three hotels .