Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to travel on airplanes with a gun [title] Get a good case. [step] The best cases are those made by pelican, starlight, and similar companies. These cases are tough! Supposedly a tank can roll over them without damage to the contents.

Ending1: Tsa and airline baggage handling is rough on cases, so the best case is a requirement. The typical walmart case simply will not do. Ending2: Some such cases are available that are required for passenger flights. Some such cases require you to buy one. Ending3: [title] Experiment with different bolt-action options to find a good system to protect you. [step] Some items to protect : [substeps] Macro-or.22). Ending4: First, they need to be machine-washable and have easy turn-by-turn washers. Second, the case should be made easily, without debris.

Answer format: ending1/ending2/ending3/ending4