“…In Table , we use data from the NLSAAH to descriptively explore the credibility of the exogeneity of deployment assignment, in a spirit similar to Cesur, Sabia, and Tekin (, ) and Cesur and Sabia (forthcoming). Consistent with those studies, we find that conditional on military rank, timing of service, branch, and occupation, deployment assignment is orthogonal to a wide set of background characteristics: age, race, height, weight, years of schooling attained, religious affiliation, maternal educational attainment, parental marital status when the respondent was an adolescent, parental income when the respondent was an adolescent, health insurance status, as well as the respondent's predeployment risky health behaviors (smoking, binge drinking, and drug use), measured analogously to the outcome variables, when the respondents were in high school , ,…”