again. >> executives from three industry giants in charge -- bp, transocean, and halliburton -- >> nothing but the truth. >> reporter: -- quickly pointed fingers at a senate hearing. >> as the lease operator and well owner, that falls on bp. >> transocean, as owner and operator of the deepwater horizon drilling rig had responsibility for the safety of drilling operations. >> reporter: all three companies worked together on the doomed deepwater horizon. oil giant bp hired halliburton to seal the undersea well with cement in preparation for drilling, leasing the rig above it from transocean, the world's largest offshore drilling company. >> i hear one message, and the message is don't blame me. >> bp facing environmental and public relations disaster says it will pay for all legitimate costs. >> liability, blame, fault, put it over here. >> we'll have much more on this in just a few minutes time when in a revealing interview,