I was waiting for you
A few hours before a trailer for upcoming Terminator movie, Genisys released. It looks like timeline is a little bit messed up. Skynet sends a T-800, but this time to further back, so John sends Kyle to protect his mother – this is almost T1 plot now – but when Kyle gets there he learns they already took care of that T-800! They? Sarah and an old T-800 of course. And old-800 was waiting for him for some time. The thing is, it looks like those stuff happened earlier, because T-1000 also there, trying to kill Sarah when Kyle came.
“Wut” is the word you are looking for. Here is my theory. Skynet sent T1-Arnold to past to kill GO ON