The phrase 'goes ballistic' is an idiom that means to become extremely angry or violent. The crossword solutions for this phrase are ERUPTS (6 letters), RANTS (5 letters), SNAPS (5 letters), RAGES (5 letters), FLIPS (5 letters), HASACOW (7 letters), HASFITS (7 letters), LOSESIT (7 letters), and SEESRED (7 letters). All of these words describe a person who is in a state of extreme anger, frustration, or rage. For example, someone who 'erupts' might be shouting or screaming, while someone who 'rants' might be delivering a long, angry speech. Someone who 'SNAPS' might be quick to respond with an angry outburst, while someone who 'flips' might suddenly become very aggressive. Finally, someone who 'has a cow' or 'has fits' or 'loses it' or 'sees red' is likely to be in a state of uncontrollable rage.