This is a call from an organization called life line screening that has health fairs to give ultra sound tests for your heart, to see if you have osteo or several other tests to prevent heart attack, aneurisms, to check to see if  you are diabetic but it's not free it does cost but these are tests that your HMO will not pay for until your are greatly ill.  So it's good to get preventative testing.  just a couple of hundred dollars may save your life.