Did anyone else see that weird triangular light formation over Phoenix last Tuesday night?

Bit off my usual patch this one as I'm more of a spirits and mediumship sort of person, but my sister lives out in Arizona and she rang me on my mobile absolutely beside herself Tuesday night saying there were lights doing something "impossible" over the city - anyone know if she was seeing the same thing you lot are talking about? She's not the excitable type so it's got me a bit rattled if I'm honest, and now I'm wondering if I should be pointing her toward this forum or whether she'd think her older brother in Pembrokeshire has completely lost the plot joining groups like this.