Can't end this numbness

Can someone give me more insight into my husband? He is a veteran - air force paramilitary former EMT. He too describes himself as numb to all the chaos occurring now. I am a trauma survivor too and retired nurse- was RN. He is also hypervigilant. I love him dearly. But we argue over stupid stuff. I had help retraining my nervous system not to over react. Take time. One thing at a time. I cannot tolerate much news anymore. He stays current. Just need help understanding. Thank you.