It was Richard's men. They're trying to force you out of this mission.
5 seconds sound clip from The Master (1984) - A Place to Call Home (S1E14) sitcom.
You can hear this line at 00:21:42.360 in the Blu-ray version of the TV Series.
Quote context
[...]
- The reason we might have found out if you'd been a little easier on him.
- The doctor's in with Bobby now. He's gonna be all right.
- It'll put another strain on his heart.
- A helicopter ride. Didn't get very far.
- It was Richard's men. They're trying to force you out of this mission.
- But why?
- Found it in the rubble in the barn. Mike did steal it.
- Not much in here. Why would anyone want to shoot at a kid for a few dollars and an Indian arrowhead?
- Who in the hell is that old man I keep hearing about?
[...]