Police confirmed 4 previous attacks on military facilities . CNN 's Brian Todd , Adam Levine , Padma Rama , Mike Ahlers and Carol Cratty contributed to this report . The latest attack is ` ` relatively similar '' to the others , police say . A bomb struck a guard at a Coast Guard recruiting station nearby .
Police confirmed 4 previous attacks on military facilities . The latest attack is ` ` relatively similar '' to the others , police say . A bomb struck a guard at a Coast Guard recruiting station nearby .