Question: Did he make a reference to the bomb threat?
About the article "Assassination of Martin Luther King, Jr.", section "Memphis".

Candidate passages:
King travelled to Memphis, Tennessee in support of striking African American sanitation workers.
The workers had staged a walkout on February 11, 1968, to protest unequal wages and working conditions imposed by then-mayor Henry Loeb.
At the time, Memphis paid black workers significantly lower wages than whites.
In addition, unlike white people, black people received no pay if they stayed home during bad weather; consequently, most black people were compelled to work even in driving rain and snow storms.
On April 3, King returned to Memphis to address a gathering at the Mason Temple (World Headquarters of the Church of God in Christ).
His airline flight to Memphis was delayed by a bomb threat against his plane.
With a thunderstorm raging outside, King delivered the last speech of his life, now known as the "I've Been to the Mountaintop" address.
As he neared the close, he made reference to the bomb threat:
During a football game in Washington, D.C., a terrorist makes a bomb threat to the DHS, stating that a bomb is in a stadium.
Meanwhile, the family of DHS agent Mike Bookman (Arquette), are taken hostage. 
As evidenced by the 1970 bombing of Sterling Hall at the University of Wisconsin-Madison, Campus bomb situations require a flexible yet comprehensive plan for responding to threats, particularly when threats occur during a period of high student concentration on campus.
Occurring less frequently than other campus emergency situations, bomb situations can pose a variety of threats to college campuses.
Campus bomb threat safety plans begin with the verification of threat, involving an in-depth search of campus to determine the threat's location.
Following the identification of the vulnerability, the safe and ordered evacuation of potential victims from the risk area becomes an emergency management priority.
Current bomb threat guidelines popularize the controversial theory that prevention of panic is more strategically advisable than the dissemination of all immediate information, advocating the use of code words to prevent panic and ensure an organized evacuation.
A situational hierarchy is also advisable for enforcement, to implement a defined, chain of command-based, decision-making process to reduce the ambiguity in chaotic crisis situations.
In the case of the Sterling Hall bombing, advanced preparedness was impossible.
The bombers did not utilize bomb threats to make the vulnerability known, and as a result, there was a loss of life involved with the crisis.
The university's best course of action involved the response to the emergency, mainly the safe evacuation of the building's other inhabitants, and isolation of the campus from further harm.
Other college campuses may choose implement response plans evolving from this instance of a fatal campus bombing emergency in order to assess potential shortcomings existing in their own emergency management policies. 
The episode was written by Neil Cross.
Before he started writing Cross did not know Connie was the mole from the previous episode, so he included it to help with the storyline.
The character was originally intended to be killed by the end of the last episode, but Cross kept her alive until the end of the finale.
He wanted her killed off at this episode, as he was the one who created Connie in the sixth series, and felt it gratifying to kill off a character he created.
In writing the plot, Cross was inspired by the Rupert Walters script for "Frequently Asked Questions" from the third series, which revealed a series of weapons caches throughout the United Kingdom set up by the Russians during the Cold War; Cross wanted to use that as a way to introduce the nuclear suitcase bomb.
The bombs design from the episode was based from actual designs, but invented its failsafes.
The producers also intended to tease the audience that after the brutal killing of Ben Kaplan (Alex Lanipekun) from the previous episode, they would think that things could not get worse for the team, until the nuclear threat in the finale.
The scene where the team breaks Connie out was intended to show the audience that the protagonists are willing to go to extreme measures to stop serious threats.
Cross wanted to make it a very pure "Spooks" episode by setting up the entire plot in one scene, and then include a chase throughout London between FSB officers and the main characters.
Cross enjoyed creating the FSB team featured in the episode, especially as he created them as a Russian version of the "Spooks" protagonists, but also make their base much more lit with windows.
The bomb defusal scene was originally set at a graveyard, but the producers decided it would be best to set it underground.
Though it took several rewrites, the script remained "fundamentally the same" throughout the writing process.
The part where Connie asks for safe passage to New Zealand was a "sly personal reference" to Cross, as the writer himself resides in the country.
In one scene, Lucas can be seen breaking into a car and getting his hands on various items that would be useful to help set up traps against the FSB officers.
Throughout the episode's development, the items kept changing.
There were also staff discussions about what they could get away with in terms of the protagonists killing FSB officers.
The most prominent discussions included Harry strangling one officer with his necktie, and Lucas shooting another in the head in cold blood despite being unarmed and subdued. 
The University of Pittsburgh Bomb Threats were a series of ongoing bomb threats at the University of Pittsburgh.
The first threat was observed on February 13, 2012 after being written on a bathroom stall in the Chevron Science Center, though it was not until approximately a month later that the threats began to come at an increasingly fast pace.
As of April 21, 2012, with the bomb threat count being at approximately 145, the bomb threats concluded.