Defend the Artillery

Defend the artillery at (Location Name) is a Minutemen radiant quest in Fallout 4.

Quick walkthrough
This quest can be started randomly when speaking to Preston Garvey or listening to Radio Freedom, who tells you that a settlement needs help defending its Artillery piece. On arrival one of the settlers will tell you the Brotherhood of Steel has been snooping around, and they believe they mean to destroy the artillery.

Bugs

 * Up until Patch 1.3, it seems this quest did not trigger correctly for most people.