 The firing drew in more VC, and soon Company D found itself outnumbered.Artillery fire from Firebase Stephanie and helicopter gunships from Troops C and D, 3/17th Cavalry, based at Tây Ninh Combat Base, more than evened the odds, and Mastoris soon sent another company to assist the one in contact.The fighting ebbed and surged throughout the day, with the VC repeatedly attempting to push up Route 10 toward the city.