[quote=@Byrd Man]
Remember how last time they dealt with the scepter/tesseract all of them needed to work together, parts of NYC ended up destroyed and the entire city was almost nuked? Going out on a limb, so hear me out, but maybe that's why they decided to work together again?
[/quote]

Well to be fair they knew the Tesseract was an infinity stone but they didn't for the sceptre. I mean I suppose there's also Widows speech at the end of winter soldier about them being needed. Here's a follow up in Universe. Rhodey isn't activitely involved as he's USAF. Makes sense. Why not Falcon? Yes he's trying to track Bucky, which in the end he fails to do and joins up with the Avengers at the end of the film for the cocktease Avengers assemble, but why not at Sokovia? There's time for Fury to get Rhodey and a helicarrier there. Why is Sam just like 'Nah I'm good fam'