there are new fears and threats
"The U.S. government had obtained intelligence that associates of an al Qaeda affiliate in Syria – the Al Nusrah Front – and extreme elements of other radical groups were being joined by operatives from al Qaeda in the Arabian Peninsula, the Yemen-based group behind the failed underwear bomb plot on Christmas Day 2009 and the plot a year later to take down cargo planes over the United States with explosives packed into printer cartridges.
And the groups are jointly working to produce new and “creative” designs for nonmetallic explosives, leading U.S. analysts to believe that the group of radicals, who have worked with Al Nusrah Front, might be looking to target a U.S.- or European-bound plane, sources told ABC News.
the first problem is that the different groups have united their 'scientific' and 'organizing' talents in setting up new kinds of attacks against Airlines (because an attack against an airline has an enormous political, PR and economic impact)
the second problem is that with thousands of youngsters with international passports fighting in Syria (which is one of the main reasons to stop this war with all means as soon as possible) it will become much easier to bypass all profiling and databases to only double check certain persons
so don't be surprised if you have to be three hours before departure in the airport, if you are questioned more thoroughly and if for any reason or suspicion you are refused boarding