“In this threat environment with the increased attacks on public officials, it’s surprising that a CEO of a major corporation would walk around with no security at all," said Don Mihalek, a retired senior special agent for the U.S. Secret Service and an ABC News contributor.

Retired FBI special agent Richard Frankel, founder of RMF Crisis Management, said he received several calls from companies within hours of the shooting looking to reevaluate executive security.

“Some already have security and so they are deciding if they need to increase it, and others who have not had security are saying, ‘Do we need to have some security, or do we need to have at least a policy regarding security in place?’” said Frankel, also an ABC News contributor.