U.S. Sen. Claire McCaskill is exploring ways to elicit testimony from medical equipment companies that did not send representatives to her hearing last week on the industry and its marketing tactics last week. McCaskill is currently reviewing the information presented at the hearing to try and find ways to prevent waste and fraud within the medical equipment industry, according to a statement Monday from her office. A letter from Dr. Charlotte Kennedy of Internal Medicine Associates in Chesterfield helped spur McCaskill's hearing, held April 24 in Washington, D.C., to examine what she's called "aggressive" marketing tactics by companies in the medical equipment industry.