Shortly after the whole high-security thing started there was a UK military officer who had been in charge of counterterrorism somewhere like Belfast, who was an expert in homemade bombs. He said the whole three-ounces of liquid thing was complete bullshit. He knew the specific ingredients they were saying people could potentially mix to make explosives in an airplane restroom, and he said no, these substances would absolutely not blow up a plane or blow a hole in a plane. They had to be combined slowly and carefully, almost drop by drop, in a temperature-controlled vessel, or they would react too fast, creating a violent splash that would merely give the would-be terrorist serious chemical burns.