Can You Count?

With all of the excitement this week, I haven't even gotten around to mentioning that it's Engineer's Week.  Yup, we get a whole week to celebrate my profession.  Working for an engineering firm, my company celebrates as well.  In addition to interoffice group competitions and a luncheon, we've also been getting daily E-week Quizzes. 

What kind of enginerd would I be if I didn't share at least one with you?  How many squares can you find in this picture?