Inspect Exterior Body, Wheels, and Undercarriage

What happens here

The owner continues the exterior inspection, pointing out several areas of concern. He shows a previous rust repair on the rear fender that utilized pop rivets and caulk. He also notes significant 'crustiness' (rust) under both the rear and passenger-side fenders. Despite these issues, he observes that the truck's main frame appears to be solid. Further inspection reveals more rust and signs of past repairs on the passenger side, some with improvised materials like hot glue, caulk, and duct tape, which are now cracking.

Goal: Identify rust, body repairs, and general exterior condition.