Certain pods used as orbit rescue crafts

[AlecGMain]

A Tundra module which did not have openable doors unless landed was where a Kerbal I needed to rescue was located. I was unable to get him out and had to end the mission.

[Prototype2001]

1. Use the claw to merge vessels to transfer crew, you also will have missions where you need to retrieve the pod so the claw is needed to accomplish this as well.

2. Bring a engineer and weld MKS ranger airlock to the doorless vessel.

1 makes more sense due to the latter statement of mission requirements.