article_snippet: Brothers visited a New Hampshire gun range about a month before the attack.
article_snippet: Brothers shot 9mm pistols for about an hour during Brothers visit to the Manchester Gun Range on March 20 .
article_snippet: In A video, Brothers can be seen at the Manchester Gun Range.
article_snippet: According to documentation that was presented during the trial, Brothers shot 9mm pistols for about an hour, Boston.com reported.
article_snippet: Brothers rented a Glock 17 and Glock 34 and bought four boxes of  ammunition from the Manchester Gun Range.
article_snippet: Brothers wrote Brothers had an 'intermediate' level of experience with pistols and Brothers were not suffering mental illness or users of illegal drugs, WMUR reported.
highlights_snippet: Brothers were at a gun range in Manchester, New Hampshire .
  
highlights_snippet: Brothers visited a gun range in Manchester, New Hampshire and fired handguns about a month before bombing .
  
highlights_snippet: Brothers listed Brothers handgun skills as 'intermediate' on a gun range form .
  