The Philippine military said three navy vessels, two FA-50 light combat aircraft and an A-29B Super Tucano light attack plane would participate, while the United States would send a littoral combat ship and a P8-A Poseidon maritime patrol and reconnaissance aircraft.
Perhaps significantly, unlike the photo above, on both sides, the units are not coast guard.
The USNI has additional information here https://news.usni.org/2023/11/21/u-s-philippines-begin-three-days-of-joint-patrols-in-the-south-china-sea.
Chuck Hill's CG Blog 
Seapower magazine reports the units involved. https://seapowermagazine.org/u-s-7th-fleet-and-armed-forces-of-the-philippines-begin-maritime-cooperative-activity/