4 Relays Not Cycling After Sketch Upload—What’s Missing?

I uploaded the first sketch to arduino, the 4 relays should be turned on and off every second, but nothing happened. What did I miss?
2025-07-25 10:43:54
Schultz.Langley
It needs an external power supply to drive the xbee module and relays. Suggested: 7-12V.
