Are We Ready?, The Baby Business, Lost at Sea

David Martin reports on how the war with Iran is putting a strain on the country’s arsenal of high-tech munitions, how the Pentagon and defense contractors are working to replenish the stockpiles, and what it may mean for the future. Katrina Kaufman has a CBS News investigation into the unregulated world of commercial surrogacy in the United States and the serious ethical questions surrounding an industry with few legal safeguards. Forty-one years after the wreckage of the Titanic was discovered, Lee Cowan looks at the history of some famous shipwrecks.