new york u.s. republican presidential candidate donald trump campaign defend comment make combat veterans mental health monday say remark imply service members diagnose post-traumatic stress disorder ptsd weak event veterans herndon virginia trump call good mental health service return combat say many strong others handle see battlefield response strike insult veterans struggle ptsd republican candidate work motivate traditionally conservative military voters support nov. presidential election retire lieutenant general michael flynn trump adviser military issue say write statement candidate comment take context order deceive voters veterans marine staff sergeant chad robichaux whose question event prompt trump statement say critical reaction sicken accuse others manipulate trump word take comment thoughtful understand struggle many veterans say robichaux afghanistan combat veteran diagnose ptsd trump make remark event host political action committee call retire american warriors trump cast champion veterans campaign july pledge reform federal program war veterans attend military preparatory school serve u.s. military joe donnelly democratic u.s. senator indiana one first criticize trump remark need dismiss idea mental health issue signify weakness reinforce strength seek help donnelly say write statement ptsd among talk topics twitter monday many social media users respond trump comment realdonaldtrump veteran ptsd strong could ever tweet kevin plantz kevinplantz husband serve country honorably tweet melissa bird birdgirl1001 ptsd trump officially cross line family neither u.s. department veterans affairs campaign hillary clinton democratic presidential nominee immediately return request comment trump defend remark veterans mental health