We went to Walgreens to get my medicine and they woldn't accept my ins. cards - so we went to Eckerds.   Found out that Tenneco has changed Ins. and my card was no good.  Had to pay for my medicine.  $5.49 for the blood pressure Med.  Going back tomorrow for the Potassium.  

We went to the Cracker Barrel for lunch and then to the Johnson Space Center.  It was very interesting but tiring.  Rode the tram.