false IDs could be used when claiming a boarding pass and entering the departures terminal, so a person on the No Fly List can simply travel under a different name. False positives A "false positive" occurs when a passenger who is not on the No Fly List has a name that matches or is similar to a name on the list. False positive passengers will not be allowed to board a flight unless they can differentiate themselves from the actual person on the list, usually by presenting ID showing their middle name or date of birth. In some cases, false positive passengers have been denied boarding or have missed flights because they could not easily prove that they were not the person on the No Fly List. Notable cases False positives and abuses that have been in the news include: Numerous children (including many under the age of five, and some under the age of one) have generated false positives. Daniel Brown, a United States Marine returning from Iraq, was prevented from boarding a flight home in April 2006 because his name matched one on the No Fly List. David Fathi, an attorney for the ACLU of Iranian descent and a plaintiff in an ACLU lawsuit, has been arrested and detained because his name was on the No Fly List. Asif Iqbal, a management consultant and legal resident of the United States born in Pakistan, plans to sue the U.S. government because he is regularly detained when he tries to fly. He has the same name as a former Guantanamo detainee. Iqbal's work requires a lot of travel, and, even though the Guantanamo detainee has been released, his name remains on the No Fly List, and Iqbal the software consultant experiences frequent, unpredictable delays and missed flights. He is pushing for a photo ID and birthdate matching system, in addition to the current system of checking names. Robert J. Johnson, a surgeon and a former lieutenant colonel in the U.S. Army, was told in 2006 that he was on the list, although he had had no problem in flying the month before. Johnson was running as a Democrat against U.S. Representative John McHugh, a Republican. Johnson wondered whether he was on the list because of his opposition to the Iraq War. He stated, "This could just be a government screw-up, but I don't know, and they won't tell me." Later,