How many trucks carrying diseased monkeys are there ffs?

https://www.smithsonianmag.com/smart-news/monkey-business-escaped-laboratory-monkeys-after-pennsylvania-crash-found-180979460/#:~:text=In%20an%20email%20to%20AP,release%2C%20per%20the%20Philly%20Voice.

>>23786977

Are the monkeys not in locked cages in the back of the truck? Do they only use H-1b drivers? Should say Sick monkeys set free on hwy. or, only shitty drivers are allowed to drive semi full of diseased monkeys.