....But local law enfocement is usually stationed near a checkpoint. From the TSA website (
http://www.tsa.gov/weekly/062209.shtm#news1)
TSA Officers Use Technology to Detect Illegal Drugs
From the Office of Strategic Communications/Public Affairs
Three passengers traveling from Los Angeles International Airport to Kahului, Hawaii, were arrested June 3 after one of the individuals was caught carrying illegal drugs through checkpoint screening.
The first passenger was randomly selected for millimeter wave screening by TSO Tressemme Hackney. TSO Larry Patterson detected contraband and recommended the passenger receive a pat-down. When the passenger was patted down, TSO Brian Real discovered one pound of methamphetamine in the man's buttocks area, at which point Supervisory TSO Thomas Twitchell and Lead TSO Michael Coleman contacted airport police.
The man told airport police that two other passengers he was traveling with were also carrying iilegal drugs. When questioned by law enforcement, the two traveling companions, still in the public area, admitted to that they too were carrying drugs two pounds of methamphetamine.
The three men were arrested and charged with transport of methamphetamine for sale. The estimated street value of the drugs was approximately $100,000.
"Without whole body imaging, it is possible our protocols may not have found these drugs," said Los Angeles FSD Larry Fetters. "Though our job is to keep the airports safe and secure, today, our TSOs kept the streets safe too."
If the powder is found there may be a possibility of questioning about it because most states have laws against counterfeit controlled substances. I wouldn't package the powder into portions because then it looks like intent to distribute. Most white powder flies OUT of Florida so the OP has that going for him/her.