I know you all mean to be helpful but right now the family needs prayers and positive thoughts. The police are doing their job and all of your points (all excellent) are or will be covered.
I stopped by the bar Ezra was known to have been in on Tuesday and the manager was very concerned and helpful. He asked for a poster and said he would put it on a post between the men's and the ladies' rooms. Everyone who walks in the place will see it.
Posters are going up and without exception everyone who saw them was concerned. One man who works in an ER promised to check out the John Doe records of all the local hospitals.
Portland is usually a very friendly town. We all know the possibilities. Let's join together to support, Kendall, Jacqui and Becca as they requested.