I was reading a question in aviation.se and there were multiple planes. There were several planes with the designation of P-3 Orion, so it was worded Orions. There were several planes with the designation F-18 Hornet. So they were Hornets.
Then there were several planes with the designation C-130 Hercules. The author said there were several Herculess. But that looks wrong, and I couldn't figure out how to correct the following sentence: "Apple Maps showed some C-130 Herculess, F-18 Hornets, P-3 Orions, and a few other aircraft."
At first, I changed Herculess to Hercules, but the name IS "Hercules", so how do we say it in plural form?