https://www.axios.com/2024/09/09/generals-defend-harris-us-withdrawal-afghanistan
"The group accused Trump of leaving Biden and Harris with no plans to execute a withdrawal and little time to do so."
1: It's the job of those Admirals and Generals, and their staff, to draw up the plans
2: If the available plans aren't good enough, it's the job of the President and Vice President to NOT execute. That would be Biden and "last person in the room" Harris
3: IIRC, there was a Trump plan, and it involved leaving Baghram Airbase last, so the US would have total control over the exit.
But Biden and Harris canceled that