an oil free beach and said "There's still a lot of opportunity for visitors to come down here -- a lot of beaches that are not yet affected or will not be affected," Obama visits Theodore, Alabama where he says, ""I am confident that we're going to be able to leave the Gulf Coast in better shape than it was before." NOAA and University of New Hampshire Coastal Response Research Center announces a mapping site geoplatform.gov 5,000 pound tank from the Deepwater Horizon washes ashore in Miramar Beach, Florida Keith P. Ellison rules that liability cases filed against Transocean can move forward under the Clean Water Act and Clean Air Act; and that the Limitation of Liability Act of 1851 does not apply (Transocean had sought to cap its liability at $27 million for the value of its contracts on the Deepwater Enterprise). June 15 Competing oil executives testifying before the House Energy and Commerce Committee imply in their testimony that they have stronger safeguards than BP in drilling. Rex W. Tillerson, chairman of Exxon Mobil, testifies that if companies follow proper well design, drilling, maintenance and training procedures accidents like Deepwater Horizon explosion on April 20 "should not occur". John S. Watson, chief executive of Chevron, testifies that every Chevron employee and contractor has the authority to stop work immediately if they see anything unsafe. Other executives testifying are Shell and Conoco Phillips. Edward J. Markey takes the oil companies to task, noting that their submitted plans for dealing with disasters in the Gulf were nearly identical to BP's including a plan to protect the walrus which does not occur in the Gulf. Energy Committee Representative Joseph Cao from Louisiana tells the executives "Well, in the Asian culture, we do things differently. During the samurai days, we'd just give you the knife and ask you to commit hara-kiri…My constituents are still debating on what they want me to ask you to do." Fitch downgrades BP Bond credit rating six notches to BBB status. Lightning hits the derrick on the Discoverer Enterprise creating a small fire which is extinguished. The drillship temporarily suspends its collection activities. Flow Rate Technical Group places the flow at 35,000 to 60,000 barrels per day. Obama visits Pensacola, Florida where bathers are photographed on the beach in the background during the tour. He gives a speech at the Naval Air Station Pensacola. Obama in the