Lots Of Questions

From the Fox News:
The FBI says it is investigating the possibility that three American teenage girls were attempting to join the Islamic State in Syria when they were detained in Germany.
A law enforcement source told Fox News Tuesday that the girls are home in Colorado after they were tracked down in Frankfurt. The three girls are all under the age of 18 and are not expected to face charges. Two of the girls are of Somali descent and one is of Sudanese descent, according to the source....
VOA News reported Sunday that the girls had vanished from their homes last week and traveled from Colorado to Chicago, and then Frankfurt. The girls’ family members reported them missing to authorities in Denver, who then worked with authorities in Germany to track them down.  http://www.foxnews.com/world/2014/10/21/3-american-teens-detained-in-germany-after-reportedly-trying-to-join-militants/
Questions:
Where did the girls get the money?
How were the girls able to get on a plane without any guardians present, especially on an overseas flight?
How did they pay for the tickets and were they 1 way or round trip?
How did they get to Chicago?
How did they get past our vaunted security at the airports?
Who were their contact people?
There are a lot more questions but these are a good start.