Sai has "a neurological disorder that causes episodic muteness and muscle spasms" -- basically, he sometimes becomes mute and gets bad shakes. His doctor has advised him to have juice continuously available, and this helps control his condition. TSA rules allow him to bring any amount of juice through a checkpoint. Unfortunately, the TSA doesn't read its own rules. Instead, Sai is detained at checkpoints for endless, illegal questioning and searches of his personal papers, confidential business documents, etc. When he loses the ability to speak, he uses pen and paper to communicate, but the TSA takes the pen and paper away as soon as he cites language from a landmark legal case limiting their power to search him.
He's videoed one of these encounters, with the TSA and its private contractors at SFO, and he's filed grievances with various agencies over that incident and another at Boston Logan. The TSA is illegally refusing to follow its own administrative procedures, so he's getting ready to sue them (he needs an ADA and/or FOIA-specialized lawyer qualified for the bar in MA and/or CA and/or federally -- any takers?). He's also trying to force them to disclose their secret procedures.