yeah where is Comales?
About 25-30 km, or 15-20 miles south-southwest of Rio Grande City Texas. Or alternatively 30-35 miles southwest of McAllen, TX.
IOW, Too FReeping close. Still not as bad as the shootout a few months back in Matamoros, where rounds ended up on or near the U of Texas-Brownsville campus. Although this sounds like a much larger firefight.