Suicidal Tendencies joined on stage by Metallica's bassist Robert Trujillo

Metallica's second Arizona date, initially postponed due to James Hetfield's COVID-19 illness, saw Suicidal Tendencies stepping in for Ice Nine Kills. 

Metallica bassist Robert Trujillo, formerly of Suicidal Tendencies, joined them on stage to perform "I Saw Your Mommy," a 1983 track. 

It was a special moment, especially since his son Tye Trujillo currently plays bass for Suicidal Tendencies. 

You can watch the full clip below.