Question: WHat is the Homeland security distinguished service medal when the medal of honor is Coast guard Medal?
Schema: create table table_2104176_1 (homeland_security_distinguished_service_medal varchar, medal_of_honor varchar, PRIMARY KEY (homeland_security_distinguished_service_medal))
SQL: select homeland_security_distinguished_service_medal from table_2104176_1 where medal_of_honor = "coast guard medal"