Definition: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
Input: The documents say  17-year-old Christopher John Lewis  wanted to kill the queen but didn't have a good vantage point or a sufficiently high-powered rifle.  He  fired a single wayward shot which likely passed above the crowd.
At the time police told journalists who heard the noise that it was a sign falling over  and later said it might have been firecrackers. Police appeared to downplay the seriousness of the incident  and only charged  Lewis  with possessing and firing a weapon in public.
 He  would later kill  himself  at age 33 while in prison awaiting trial on murder charges in an unrelated case.
When questioned by police at the time   Lewis  claimed to be part of a group called the National Imperial Guerrilla Army that was carrying out terror operations.  He  said there were two other members called the Snowman and the Polar Bear  but later admitted  he 'd made them up.
The documents say police found a .22-caliber rifle with a discharged cartridge on the fifth floor of a building after  Lewis  told them it was there.
" Lewis  did indeed originally intend to assassinate the queen " the documents say  "however did not have a suitable vantage point from which to fire  nor a sufficiently high-powered rifle for the range from the target."
The documents say the angle of fire and range would have made it difficult for  Lewis  to shoot the queen  and that buildings would have screened her for all but a few seconds.
During a later visit by the queen  according to Stuff  police were so worried that  Lewis  might make another assassination attempt they paid  him  to go on a 10-day vacation to a remote island. They gave  Lewis  free accommodation  daily spending money and the use of an SUV.
The news website said people close to the case thought  Lewis  got off lightly due to political interference and worries that New Zealand would lose future royal tours due to the security lapse.

New Zealand teen fired shot near Queen Elizabeth II in 1981