Using children's toys to hide guns

What are we to make of the fact that some people are willing to use children's toys to hide guns from the TSA at airport screenings? There is a video showing how this disassembled gun was found by a screener in a stuffed animal at a Rhode Island airport.  No wonder they make small children and older people go through thorough screening. Some object to that but there was a recent incident of a weapon found in the hollow tube of an elderly person's walker. What was the father of this child thinking? What did he want a gun for on his travels? Why conceal it in his child's toys?