A heavily-oiled bird is seen after being rescued from the waters of Barataria Bay, which are laden with oil from the Deepwater Horizon spill, in Plaquemines Parish, La., on June 26.
The US military has joined the effort to contain the Gulf of Mexico oil spill. It's been declared an event of 'national significance,' meaning more resources will be available.
To contain the oil spill, Gulf of Mexico slicks will be set alight. The hope is that this will stop the oil spill before it hits land. But oil burns are a sign that other efforts have failed.