The tug boat Mark E. Kuebler rests aground on shoal water near Corpus Christi, Texas, Jan. 23, 2023.  (U.S. Coast Guard courtesy Station Port Aransas) CORPUS CHRISTI, Texas — The Coast Guard is responding to a tug boat that ran aground near the South Texas Gateway refinery in Corpus Christi, Monday. Coast Guard Sector Corpus Christi command center watchstanders received a call at 4 p.m. Sunday,...