From the Find Craig Arnold Facebook Group:
5/6 12:38pm EST: The search team from 1SRG spent all day yesterday discovering and following Craig's trail. They found some evidence that has given them increased confidence that it is definitively Craig whom they are tracking. Though they have not yet found Craig himself, they are working amazingly hard and have made significant progress and we are really grateful and really hopeful.
Donations are still needed, appreciated! And: prayers. All the prayers you can, in fact, muster.