It was found in central Alabama
This is a true bug (Heteroptera) larvae as the dorsal scent glands and the wing pockets show (see image below).
I suspect it to be a member of the family Coreidae as it exhibits typical (larval) characteristics of this family: a rhomb shaped body and long legs and antenna.
A reduviid larvae, as some of the commentators suggest, would have a strong, often bow-shaped rostrum (proboscis) that I assume should be visible from the perspective of the photographer. Also, reduviid bugs usually have a relatively long head composed of a long neck and nose.
Image sources (in reading direction): Mictis profana Graham Wise CC-BY-2.0 | Coreus marginatus AfroBrazilian CC-BY-SA-4.0 | Arilus cristatus Judy Gallagher CC-BY-2.0 | Rhynocoris annulatus Slimguy CC-BY-4.0