Brett Favre fired up his laser rocket arm for a training session with Atlanta Falcons cornerback Robert Alford today ... and the guy tells us Favre STILL has the tools to play in the NFL.
Alford -- who famously picked off Tom Brady for a TD in the Super Bowl -- tells TMZ Sports he was at the Traction Sports Performance center in Louisiana when Brett stopped by.
Alford says Favre didn't even warm up ... he just grabbed a ball and started rifling away -- "throwing lasers on the dot.