title: How to properly pass NSArray / NSMutableArray from one UIViewController to another
body: <p>An iphone app I'm working on is terminating periodically ... and I have a feeling it is because of how I'm accessing a shared NSArray amongst several view controllers.   So ...</p>
  
  <p>What is the best way to pass NSArray/NSMutableArray amongst several ViewControllers ... all of which can modify and/or set it to nil or whatever?</p>
  
  <p>Thanks</p>