...of the public enemy, acts of the Government In either its sovereign or contractual capacity, flres, floods, epidemics, quarantine restrictions, strikes,...negligence of the Contractor. If the failure to perform ia caused by the default of a subcontractor, and If such default arises out of clauses beyond the control...

...caoaclty, fires, floods, epidemics, quarantine restrictions, strikes, freight embargoes, and iimauny severe weather; but in every case the failure to perform...the failure to perform is caused by the default of the subcontractor, and if such default arises out of causes beyond the control of both the Contractor...