Inclusion Criteria:  Awake and alert GCS >14 Admission systolic blood pressure greater than 90 and heart rate less than 120 Without signs of clinically significant ongoing external hemorrhage with no active bleeding documented on radiology/ultrasound and stable vital signs (no signs of hemodynamic deterioration) during initial evaluation (approximately 15 minutes post admission)  Exclusion Criteria:  Altered mental status GCS < 13 Systolic blood pressure less than 90 or heart rate greater than 120 Need for ongoing fluid or pressor support (standard local fluid resuscitation only) Clinically significant ongoing external hemorrhage Respiratory distress with O2 saturation <96% Pre-existing systemic illness, likely to alter systemic cardiovascular response to hemorrhage (overt clinical heart failure). Including congestive heart failure, and a paced cardiac rhythm. Pregnant Prisoner status