Officials at Integris-Baptist Medical Center, where the helicopter was based, identified those killed as pilot Mark Montgomery and flight nurse Chris Denning.

NPR: Medical Copter Crashes In Okla., Kills 2, Hurts 1

Mark Roberts of Montgomery Securities, a San Francisco investment bank, points out that the one soon to occur in the Internet will be particularly savage because it depends on the fickle and cut-throat consumer market (businesses such as mobile telephones and fax machines began in the corporate market).

ECONOMIST: Internet service providers: Making a business of the bit buffet | The

Investors looking for individual stocks should consider health care, energy and tech stocks with above-average dividend yields, says Mark Luschini, chief investment strategist at Janney Montgomery Scott.

WSJ: Why Stocks Look Too Expensive

"There's been a near-perfect correlation in equities gains each time the Fed induced more liquidity into the marketplace, " said Mark Luschini, chief investment strategist at Janney Montgomery Scott.

WSJ: Stocks Finish in the Red