The video above (published by TMZ) documents the very first moments of the Ft. Lauderdale airport shooting. The suspect is seen calmly entering the frame of the video from the left, pulling a concealed firearm from the front of his pants (in the “appendix carry” position), and begins firing at targets as people scatter.
This video adds detail to the statement from the police that the suspect retrieved and loaded his firearm from his checked bag in the bathroom and “came out firing,” showing that he calmly walked some distance down the baggage claim area possibly towards a higher concentration of people before revealing his intent.