A Frontier Airlines flight from Denver to Dallas was grounded on Monday morning because of a security concern.

U.S. Rep. Nancy Mace (R-S.C.) is defending her behavior toward authorities before an early morning flight last week, claiming the alleged confrontation came after repeated security lapses at the Charleston International Airport.

Nancy Mace addressed what she calls security breaches at Charleston International Airport days after allegedly berating airport police.Mace spoke with reporters early Monday following an incident on Thursday morning that she says put her safety at risk.

CHARLESTON , S.C. (WCIV) — Rep. Nancy Mace plans to hold a press conference to address "airport security breaches" in Charleston Monday morning as scrutiny intensifies over her reported berating of law enforcement at Charleston International last week.

The Xovis system uses sensors that detect how many people are in line and predict how long the wait time will be based on the inflow and outflow rate, number of lanes open and other factors.

Air traffic controllers missed their first full paycheck last week as the government shutdown approaches a record length.

U.S. Rep. Nancy Mace took aim at Charleston International Airport officials Monday morning, accusing them of repeated security failures following what she descr