TRAVELING FROM OUTSIDE OF MISSOURI
http://www.travelsmith.com/travelcenter/wp-content/uploads/2014/06/PackingChecklist_2014.pdf
Obviously quite a few of these things won’t apply, but just an all-comprehensive list if you’re flying in from outside of Missouri. In Feb/March it will probably still be cold in KC, maybe even snowing. Wear gloves, coats, maybe even get earmuffs.
I would also bring with you a copy of your application printed out so you are familiar with everything you did, and put it in this Pad-Portfolio: http://www.officedepot.com/a/products/648445/Samsonite-Vinyl-Bi-Fold-Writing-Pad/ to carry with you. There will probably be several presentations and you might need to take notes.