You don't want to be a sitting target, so make sure you're constantly in the move- but more importantly, ensure that you are moving within a group, and never caught on the edges of one.
Sitting Target or Screaming Target is a 1972 British film directed by Douglas Hickox and shot in London. It stars Oliver Reed, Ian McShane and Jill St. John and was based on the 1970 novel by Laurence Henderson.