The deputy commander of NATO's operation in Libya says warplanes may have mistakenly hit rebel forces near Brega but offers no apology, though the NATO secretary-general says, 'I strongly regret' the fatalities. Meanwhile, a ship arrives in besieged Misurata bringing relief supplies.NATO Rear Adm. Russell Harding, the deputy commander of the alliance's operation in Libya, said Friday that NATO warplanes may indeed have hit rebel forces near the town of Brega on Thursday but offered no apology for what was apparently a deadly mistake.