Kansas City has several options here. I think their best bet is to hope that Tye Hill or Jimmy Williams fall here - other DB options are more questionable. Also would look at Winston here if he falls.
Biggest other need that is best addressed now would be WR, and with Chad Jackson off the board, the Chiefs will select:
1.20 Santonio Holmes WR Ohio State
With his speed and jumping ability, Holmes will give them the playmaker #1 WR they desperately need. Plus he can run-block (always a prime skill in KC) and fill in for Dante Hall if needed. Oh and they already have the name on the jerseys, just have to change the number