US Vice President, Dick Cheney had an implantable cardioverter defibrillator (ICD) implanted on June 30, 2001. His so-called pacemaker-plus monitors his heart rate and stimulates his heart with electricity to correct an irregular rhythm.

When asked by reporters how he was feeling after his surgery, the vice president smiled gave the "OK" sign with his hand and replied, "Very good". He also added "A little tender in the shoulder, but it'll pass".

President Bush also joked by adding, "We were thinking about doing some jumping jacks before
you came in".