Go through the records and find everyone in the military who speak Spanish and can drive a deuce-and-a-half or larger truck.
Actually, I think speaking Spanish would be a secondary requirement. If anyone who can drive a stick behind the wheel of something with more than four tires comes rolling in with pallets of bottled water and cases of Chef Boy-R-Dee and toilet paper stacked up in the bed, the inference is universal: help has arrived. No need to talk about the weather, then.
Like most units in the Army, there are already Spanish speakers. Sounds like they need to mobilize some National Guard Truck Units. Probably also place the Puerto Rico under martial law. This would not be happening if the island were populated by Swiss, English or German descended people...just saying.
Ship some horses, feed and cowboys in thar’! Covered wagons, fire wood and iron pots. Boil water and Ship in the drivers.