 Captain C. D. Gilroy, of USS "Monocacy", was informed of the situation and asked to escort the merchant ship back down the river on the next day, July 21.While only four miles off Chungking, Chinese rebels along the river again attacked from the north bank of the Yangtze.Due to other related incidents in the past, the crews of "Monocacy"s machine guns and cannons were immediately ordered to return fire.