Investigators found that the oil level was low and there were indications that there had been a leak in the system.

BBC: Holly Buchanan's remains found on Loch Lomond island

Currently, the number of days of oil demand cover is at a low of about 57, the same level we saw in 2004 and late 2007.

FORBES: The Case For Higher Crude Prices

The report does not rule out other possible contributors to Gulf War illness -- including low-level exposure to nerve agents and close proximity to oil well fires -- though it fails to establish any clear link.

CNN: Gulf War illness is real, new federal report says