Applying the fundamental cannon on concord disaster

Use 4 or 3 of fundamental Cannon and apply them on the concord crash .
please write each point separately and determine the case which you used .
The fundamental Cannon is :
-Hold paramount the safety, health, and welfare of the public.
-Perform services only in areas of their competence.
-Issue public statements only in an objective and truthful manner .
-Act for each employer or client as faithful agents or trustees.
-Avoid deceptive acts.
-Conduct themselves honorably, responsibly, ethically, and lawfully so as to enhance the honor, reputation, and usefulness of the profession.