get
https://example.com/api/v1/mobile/threats/
Get threats for a stored session position.
Query params:
- session_id: Session ID from previous position update
- radius_nm: Optional threat radius (default 25nm)
Returns: { "threats": [...], "position": {"lat": 34.05, "lon": -118.25}, "timestamp": "2024-01-01T00:00:00Z" }