There have been some fantastic air tanker drop videos this year, including the DC-10 Very Large Air Tanker (VLAT) laying down miles of fire retardant under horrible visibility, but this P-3 Orion (or L-188 Electra?) yawing all over the place while spewing slurry takes the cake!
The P-3 Orion was developed from the Lockheed Electra, and both are very tough machines. The P-3 has spent the better half of a century hunting submarines low over the ocean in the corrosive salty air, and a handful have been converted to air tankers, although the biggest operator of the type in tanker form went out of business last year, grounding their seven P-3A tankers. As of very recently those aircraft are being resold and put back into operations, and this year their 3,000 gallon dropping ability could be put to good use as fires burn out of control all around the west. The Lockheed Electra based tankers are still soldiering on with other operators and continue to fight fires as this is being written.