“There is no doubt that we are positioned to be stronger together,” Lindsay says. “Beginning on the day of close, this merger will allow us to leverage each company’s talented
personnel, capabilities and systems to create an industry leading supply chain organization.” IMPORTANT ADDITIONAL INFORMATION AND WHERE TO FIND IT This communication does not constitute an offer to sell or the solicitation of an offer to buy any
securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of
such jurisdiction. This communication is being made in respect of the proposed merger transaction between L3 Technologies, Inc. (“L3”) and Harris Corporation (“Harris”). In connection with the proposed merger, Harris filed with the U.S.
Securities and Exchange Commission (the “SEC”) a Registration Statement on Form S-4 (Registration No. 333-228829) that includes a Joint Proxy Statement of L3 and Harris and a Prospectus of Harris, as well as other relevant documents regarding the
proposed transaction. The Registration Statement, as amended, was declared effective by the SEC on February 20, 2019. L3 and Harris commenced mailing the definitive Joint Proxy Statement/Prospectus to L3 stockholders and Harris stockholders on or
about February 25, 2019. This communication is not a substitute for the Registration Statement, the Joint Proxy Statement/Prospectus or any other document that either or both of L3 or Harris or any of their respective affiliates may file with the
SEC or make available to their respective stockholders. INVESTORS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE JOINT PROXY STATEMENT/PROSPECTUS REGARDING THE MERGER AND ANY OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC
CAREFULLY, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. A free copy of the Joint Proxy Statement/Prospectus, as well as other filings containing
information about L3 and Harris, may be obtained at the SEC’s Internet site (http://www.sec.gov). You are also able to obtain these documents, free of charge, from L3 by accessing L3’s website at https://www.l3t.com/ or from Harris by accessing
Harris’ website at https://www.harris.com/. L3 and Harris and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from L3 stockholders and Harris stockholders in respect of
the proposed transaction. Information regarding L3’s directors and executive officers is contained in L3’s Annual Report on Form 10-K for the year ended December 31, 2018 and its Proxy Statement on Schedule 14A, dated March 26, 2018, which are
filed with the SEC. Information regarding Harris’ directors and executive officers is contained in Harris’ Annual Report on Form 10-K for the year ended June 29, 2018 and its Proxy Statement on Schedule 14A, dated September 6, 2018, which are
filed with the SEC. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the Joint Proxy Statement/Prospectus regarding the proposed
merger. Free copies of this document may be obtained as described in the preceding paragraph. FORWARD-LOOKING STATEMENTS Certain of the matters discussed in this communication are forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995. All statements other than historical facts may be forward-looking statements; words such as “may,” “will,” “should,” “likely,” “projects,” “financial guidance,” “expects,” “anticipates,” “intends,”
“plans,” “believes,” “estimates,” and similar expressions are used to identify forward-looking statements. L3 and Harris caution investors that these statements are subject to risks and uncertainties, many of which are difficult to predict and
generally beyond L3’s and Harris’ control, that could cause actual results to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. In addition to factors previously disclosed in
L3’s and Harris’ reports filed with the SEC and those identified elsewhere in this communication, the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: the
occurrence of any event, change