Examples:

• Now, are you a loose cannon or not?
• I just can't be dealing with a loose cannon now, Gary.
• Thanks to that loose cannon of a King!
• I need a partner, not a loose cannon.
• There is a loose cannon out there and I want him dealt with immediately.
• The guy is a loose cannon.
• This guy is a loose cannon.
• Maybe he took them because he was under pressure, and became a loose cannon.
• That guy's a loose cannon.
• He's a loose cannon, commissioner.