What follows is an opinion from the Supreme Court of the United States. Your task is to identify the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed. The information relevant to this variable may be found near the end of the summary that begins on the title page of each case, or preferably at the very end of the opinion of the Court. For cases in which the Court granted a motion to dismiss, consider "petition denied or appeal dismissed". There is "no disposition" if the Court denied a motion to dismiss.

Opinion:
ATLANTIC CITY ELECTRIC CO. et al. v. UNITED STATES et al.
No. 78.
Argued November 12, 1970
Decided December 8, 1970
James O’Malley, Jr., argued the cause for appellants in No. 78. With him on the briefs were Louis J. Lefko-witz, Attorney General of New York, Walter J. Myskow-ski, Sheila H. Marshall, and Alfred E. Froh. Charles J. McCarthy argued the cause for appellants in No. 106. With him on the briefs were Arthur L. Winn, Jr., J. Raymond Clark, and Richard J. Hardy.
Deputy Solicitor General Springer argued the cause for ' the United States-et al. in both cases. ■ With him on the brief were Solicitor General Griswold, Assistant Attorney* General McLaren, Howard E. Shapiro, Edward M. Shul-man, William A. Iinhof, Robert W. Ginnane, and Arthur J. Cerra. Hugh B. Cox argued the "cause for appellees Aberdeen & Rockfish Railroad Co. et al. in both cases. With him on the brief were William H. Allen and Michael Boudin.
John F. Donelan and John M. Cleary filed a brief in No. 106 for the National Industrial Traffic League as amicus curiae urging reversal.
Together with No. 106, Alabama Power Co. et al. v. United States et al., on appeal from the United States District Court for the District of Columbia.
Per Curiam.
The judgments are affirmed by an equally divided Court.
Mr. Justice Douglas took no part in the consideration or decision of these cases.

Question: What is the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed?

Choices:
stay, petition, or motion granted
affirmed (includes modified)
reversed
reversed and remanded
vacated and remanded
affirmed and reversed (or vacated) in part
affirmed and reversed (or vacated) in part and remanded
vacated
petition denied or appeal dismissed
certification to or from a lower court
no disposition

Answer: 1