5 PM ET: Memphis officers arraigned, Chinese spy balloon debris, Covid-19 immunity study & more

Five former Memphis police officers charged for the death of Tyre Nichols have been arraigned – we’ll hear from Nichols’ mother and one of the officer’s attorneys. A mission to recover debris from the suspected Chinese spy balloon that the US military shot down earlier this month is complete. We’ll break down the steps being taken to help Ohio residents in the aftermath of a hazardous leak at a train derailment site. A group of bipartisan lawmakers are urging President Joe Biden to send military fighter jets to Ukraine. And, researchers examined how long immunity against Covid-19 variants could last after an infection.To learn more about how CNN protects listener privacy, visit cnn.com/privacy