CXR - butterfly distribution, bilateral patchy infiltrates
CT chest
FAST, comprehensive CT
Repeat clinical abdominal exams looking for peritonitis - X-rays, US, CT insensitive except in perforation
Initial CT head may not be enough - may require MRI for DAI
Labs
Consider carboxyhemoglobin and electrolytes
Screening UA for significant explosions
Burn labs (rhabdomyolysis, compartment syndrome, severe burns)
DIC labs (PT, aPTT, CBC, D-dimer, thrombin time, fibrinogen)
White phosphorus labs (hypocalcemia, hyperphosphatemia, LFTs)
Consider carboxyhemoglobin and electrolytes
Screening UA for significant explosions
Burn labs (rhabdomyolysis, compartment syndrome, severe burns)
DIC labs (PT, aPTT, CBC, D-dimer, thrombin time, fibrinogen)
White phosphorus labs (hypocalcemia, hyperphosphatemia, LFTs)
Blast injury
Radiation exposure 
Submersion injury
Dirty bomb
Cervical injury 
Bioterrorism
Stingray injury
Chemical weapons