Alex Quartararo
Alex Quartararo ( callsign "Crashdown" ) is a fictional character in the reimagined "Battlestar Galactica" series , portrayed by Sam Witwer . 
<triplet> Alex Quartararo <subj> Battlestar Galactica <obj> present in work <subj> Sam Witwer <obj> performer <triplet> Battlestar Galactica <subj> Sam Witwer <obj> cast member