we have and must be pursued vigorously. again, i emphasize that this will be a slow and painstaking process. in another development, i can report "ocean shield" detected an oil slick yesterday evening in her current search area. a sample of about two liters has been collected and it will be a number of days before it can be landed ashore and conclusively tested. i stress the source of the oil is yet to be determined but the oil slick is approximately 5,500 meters downwind from the detection picked up by the towed pinger locator on the "ocean shield." a few words about today's search. up to 11 military aircraft, one civil aircraft, and 15 ships