FILE - This undated file photo released by the FBI shows Amor Ftouhi, of Canada. Ftouhi was indicted in the stabbing of a police officer June 21, 2017, at an airport in Flint, Mich. Federal prosecutors have told a judge that Ftouhi, a Tunisia native who stabbed the police officer subscribes to Osama Bin Laden's ideology and celebrated the 9/11 attacks. (FBI via AP, File)
FILE - This undated file booking photo provided by the FBI shows Richard Gathercole of Roundup, Mont. Gathercole, dubbed the "AK-47 bandit," and suspected of bank robberies in five states, pleaded not guilty Monday, July 24, 2017, to unrelated charges in Nebraska. Gathercole entered the pleas in Dawson County District Court in Lexington, Neb., to two counts of possessing stolen firearms and one of theft or receiving stolen property, court records said. (FBI via AP, File)
Bryan Schroder, the acting U.S. Attorney for Alaska, left, and Marlin Ritzman, the special agent in charge of the FBI office in Alaska, address reporters Thursday, July 27, 2017, in Anchorage, Alaska, after a Utah man was arrested on a criminal complaint charging him with murder in the death of his wife on an Alaska cruise. Kenneth Manzanares of Santa Clara, Utah, is charged in the July 25, 2017, death of his wife on board the Emerald Princess. The shape was sailing in U.S. waters, meaning the FBI investigated and charges are in the federal system. (AP Photo/Mark Thiessen)
FILE - In this July 8, 2017 file image taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on July 13, 2017, Army Sgt. 1st Class Ikaika Kang holds an Islamic State group flag after allegedly pledging allegiance to the terror group at a house in Honolulu. A federal grand jury in Hawaii has indicted Kang for attempting to provide material support to the Islamic State group. Kang was indicted Friday, July 21 after he was arrested by an FBI SWAT team on July 8. Kang was ordered held without bail. Because of the indictment, Kang will no longer have a preliminary hearing that was scheduled for Monday, July 24. (FBI/U.S Attorney's Office, District of Hawaii via AP, File)
FILE - This Friday, July 7, 2017 file photo taken by the FBI and released via the U.S. Attorney's Office in Seattle shows the aftermath of a cabin on Delta Flight 129 from Seattle to Beijing, after authorities say flight attendants struggled with Joseph Daniel Hudek IV, a passenger who lunged for an exit door. The photo was included in a criminal complaint filed July 7. Prosecutors disclosed Thursday, July 20, that Hudek was indicted on five federal charges; one count of interfering with the flight crew and four counts of assault on an aircraft. (FBI via U.S. Attorney's Office in Seattle via AP, File)
FILE - This photo May 4, 1981 file booking photo combo provided by the FBI shows Donald Eugene Webb, wanted in connection with the Dec. 4, 1980 murder of Police Chief Gregory Adams in Saxonburg, Pa. The remains of Donald Eugene Webb were found buried in the yard of a Dartmouth, Mass., house last week. Authorities say Webb fatally shot Saxonburg Police Chief Adams in December 1980 during a traffic stop. (Federal Bureau of Investigation via AP, File)
In this undated photo released by the FBI on July 14, 2017, Kentucky lawyer Eric Conn is seen on security footage at a New Mexico gas station. Conn, who pleaded guilty in March to stealing from the federal government and bribing a judge in a more than $500 million Social Security fraud case, disappeared June 2, a month before his sentencing. The FBI traced a truck he was driving to New Mexico, where it was abandoned, but said there is no indication that Conn has crossed into Mexico. (FBI via AP)
In this combination of two images taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on Thursday, July 13, 2017, Army Sgt. 1st Class Ikaika Kang kisses an Islamic State group flag, left, then puts the flag to his forhead, right, after allegedly pledging allegiance to the terror group at a house in Honolulu on July 8, 2017. The active duty soldier based in Hawaii helped purchase a drone for the Islamic State group to use against American forces and said he wanted to use his rifle to "kill a bunch of people," according to an FBI affidavit. A detention hearing is set for Kang on Thursday. (FBI/U.S Attorney's Office, District of Hawaii via AP)
In this image taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on Thursday, July 13, 2017, Army Sgt. 1st Class Ikaika Kang holds an Islamic State group flag after allegedly pledging allegiance to the group at a house in Honolulu on July 8. The active duty soldier based in Hawaii helped purchase a drone for the Islamic State group to use against American forces and said he wanted to use his rifle to "kill a bunch of people," according to an FBI affidavit. A detention hearing is set for Kang on Thursday. (FBI/U.S Attorney's Office, District of Hawaii via AP)
In this combination of images taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on Thursday, July 13, 2017, Army Sgt. 1st Class Ikaika Kang kisses an Islamic State group flag, left, then puts the flag to his forehead, right, after allegedly pledging allegiance to the group at a house in Honolulu on July 8. The active duty soldier based in Hawaii helped purchase a drone for the Islamic State group to use against American forces and said he wanted to use his rifle to "kill a bunch of people," according to an FBI affidavit. A detention hearing is set for Kang on Thursday. (FBI/U.S Attorney's Office, District of Hawaii via AP)
FILE - In this June 29, 2017 file photo, FBI Director nominee Christopher Wray meets with Sen. Charles Grassley, R-Iowa on Capitol Hill in Washington. Wray, nominated to replace James Comey as FBI director is described by those close to him as admirably low-key, yet he'd be taking over the law enforcement agency at a moment when its under an intense spotlight. (AP Photo/Andrew Harnik, File)
This Friday, July 7, 2017 photo taken the FBI and released via the U.S. Attorney's Office in Seattle shows the aftermath of a cabin on Delta Flight 129 from Seattle to Beijing, after authorities say flight attendants struggled with Joseph Daniel Hudek IV, a passenger who lunged for an exit door. The photo was included in a criminal complaint filed Friday, July 7. The passenger is charged with interfering with a flight crew and faces up to 20 years in prison. (FBI via U.S. Attorney's Office in Seattle via AP)
FILE - This undated file image provided by the Federal Bureau of Investigation (FBI) shows Isnilon Hapilon, who was purportedly designated leader of the Islamic State group's Southeast Asia branch in 2016 but has long ties to local extremist movements. The Philippines' defense chief said Monday, July 3, 2017, that Hapilon, the militant leader of the group that laid siege to a southern city of Marawi, is suspected to be hiding in a mosque there, days after he was reported to have fled the bombed-out city. (FBI via AP, File)
FILE - In this Jan. 9, 2016 file photo, Robert "LaVoy" Finicum, left, a rancher from Arizona, talks to reporters at the Malheur National Wildlife Refuge near Burns, Ore. FBI Special Agent W. Joseph Astarita has been indicted in Portland Ore., Wednesday, June 28, 2017, on accusations that he lied about firing at Finicum when officers arrested leaders of an armed occupation of a federal wildlife refuge in rural Oregon.(AP Photo/Rick Bowmer, File)
FILE - In this Jan. 9, 2016 file photo, Robert "LaVoy" Finicum, left, a rancher from Arizona, talks to reporters at the Malheur National Wildlife Refuge near Burns, Ore. FBI Special Agent W. Joseph Astarita has been indicted in Portland Ore., Wednesday, June 28, 2017, on accusations that he lied about firing at Finicum when officers arrested leaders of an armed occupation of a federal wildlife refuge in rural Oregon.(AP Photo/Rick Bowmer, File)
FILE- This Jan. 26, 2016., file photo taken from an FBI video shows Robert "LaVoy" Finicum, center, after he was fatally shot by police near Burns, Ore. FBI Special Agent W. Joseph Astarita has been indicted in Portland Ore., Wednesday, June 28, 2017, on accusations that he lied about firing at Finicum when officers arrested leaders of an armed occupation of a federal wildlife refuge in rural Oregon. (FBI via AP, file)
In this undated photo released by the FBI, Amor Ftouhi is shown. Ftouhi, a Canadian man accused of stabbing an airport police officer in Flint, Mich., is returning to court to learn if he’ll remain in custody on Wednesday, June 28, 2017. (FBI via AP)